CN108989009B

CN108989009B - The method and apparatus for transmitting DMRS

Info

Publication number: CN108989009B
Application number: CN201810703271.1A
Authority: CN
Inventors: 任翔; 刘永; 葛士斌; 毕晓艳
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2017-04-01
Filing date: 2017-04-01
Publication date: 2019-08-06
Anticipated expiration: 2037-04-01
Also published as: JP6943974B2; EP3985909B1; JP2020516185A; CN108667586A; CN110447200A; CN108667586B; BR112019020630A2; WO2018177295A1; EP3591880B1; US20220158797A1; US20200007303A1; CN110447200B; EP3591880A4; EP3591880A1; CN108667581B; EP3985909C0; CA3056176C; EP3985909A1; CN108989009A; US11777683B2

Abstract

The embodiment of the present application discloses a kind of method and apparatus for transmitting DMRS, is related to field of communication technology, can be adapted for NR system.The method for transmitting DMRS may include: the running time-frequency resource determined for carrying DMRS；Then, which is sent by the running time-frequency resource.

Description

The method and apparatus for transmitting DMRS

Technical field

The invention relates to fields of communication technology, more particularly to transmission demodulated reference signal (demodulation Reference signal) method and apparatus.

Background technique

In existing long term evolution (long term evolution, LTE) standard, single user (single user, SU) is more The orthogonal DMRS ports multiplexing of multi output (multi-input multi-output, MIMO) maximum 8 layers of support is inputted, DMRS is occupied 24 RE.Specific: on frequency domain, it is right that DMRS port can be mapped in each resource block (resource block, RB) (pair) on the 0th, 1,5,6,10,11 subcarrier；In the time domain, DMRS port can be mapped in 5,6, the 12 of each subframe On 13 symbols.As shown in Figure 1.

Above-mentioned technical proposal can not be suitable for (new radio, NR) system of newly eating dishes without rice or wine.For example, the DMRS in LTE is placed in In each subframe, rear portion, due to receiving end need will all DMRS receive after just can be carried out data demodulation, therefore, it is impossible to Meets the needs of rapid data demodulates in NR.

Summary of the invention

The application provides a kind of method and apparatus for transmitting DMRS, can be adapted for NR system.

In a first aspect, the method and apparatus for being used to carry the running time-frequency resource of DMRS this application provides a kind of determination.

In a kind of possible design, this method can include determining that the running time-frequency resource for carrying DMRS.Wherein, about The associated description of the running time-frequency resource can be with reference to hereafter.

Correspondingly, present invention also provides a kind of for carrying the device of the running time-frequency resource of DMRS.Above-mentioned use may be implemented In the method for the running time-frequency resource of carrying DMRS.For example, the device can be chip (such as baseband chip or communication chip etc.) or Person's transmitting terminal (such as base station or terminal etc.).Corresponding software realization can be executed by software, hardware or by hardware The above method.

In a kind of possible design, the apparatus may include processors and memory.The processor is configured as supporting The device executes corresponding function in the method for the above-mentioned running time-frequency resource for carrying DMRS.Memory is used for and processor coupling It closes, saves the necessary program of the device (instruction) and data.Optionally, which can also include communication interface, for branch Hold the communication between the device and other network elements.The communication interface can be transceiver.

In alternatively possible possible design, the apparatus may include: determination unit, for determining carrying DMRS's Running time-frequency resource, wherein the associated description about the running time-frequency resource can be with reference to hereafter.

Second aspect, this application provides a kind of method and apparatus for sending DMRS.

In a kind of possible design, this method may include: the running time-frequency resource determined for carrying DMRS；Then, lead to It crosses the running time-frequency resource and sends the DMRS.That is: determine then the running time-frequency resource for carrying DMRS passes through the time-frequency of the determination Resource sends the DMRS.

In a kind of possible design, the DMRS is carried at least one resource unit, if the DMRS that system is supported The sum of port is 6, then in each resource unit, the running time-frequency resource that the DMRS is occupied includes the first symbol in the time domain, Including any one of following subcarrier on frequency domain: the 6n subcarrier, the 6n+1 subcarrier, the 6n+2 subcarrier, The 6n+3 subcarrier, the 6n+4 subcarrier, the 6n+5 subcarrier.Wherein, n can take more than or equal to 0, and be less thanAny one or more integers.Its specific example and related description can refer to (a) in Fig. 7.It should be understood that here " DMRS " refer to a reference signal." for carrying the running time-frequency resource of DMRS " can be understood as one or more resource units In for carrying the RE of the DMRS." in each resource unit, the running time-frequency resource of the DMRS occupancy ", refers to a resource In unit, for carrying the RE of the DMRS.It is similar in following examples, no longer repeat one by one.

In a kind of possible design, the DMRS is carried at least one resource unit, if the DMRS that system is supported The sum of port is 6, and this 6 DMRS ports are divided into 3 DMRS port groups, wherein the end DMRS in each DMRS port group Mouth is multiplexed identical running time-frequency resource by CDM mode.It in the time domain include the first symbol, in frequency then in each resource unit It include any one of following subcarrier: the 3n subcarrier, the 3n+1 subcarrier, the 3n+2 subcarrier on domain.

Wherein, n can take more than or equal to 0, and be less thanAny one or more integers.Its specific example and phase Speak on somebody's behalf bright (a) that can refer in Fig. 8.

In a kind of possible design, the DMRS is carried at least one resource unit, if the DMRS that system is supported The sum of port is 6, then in each resource unit, the running time-frequency resource that the DMRS is occupied has any in following characteristics Kind:

When the running time-frequency resource that the DMRS is occupied is the first symbol in the time domain, including the 6n of resource unit on frequency domain A subcarrier；When being in the time domain the second symbol, including the 6n+3 subcarrier of resource unit on frequency domain.

When the running time-frequency resource that the DMRS is occupied is the first symbol in the time domain, including the 6n of resource unit on frequency domain + 1 subcarrier；When being in the time domain the second symbol, including the 6n+4 subcarrier of resource unit on frequency domain.

When the running time-frequency resource that the DMRS is occupied is the first symbol in the time domain, including the 6n of resource unit on frequency domain + 2 subcarriers；When being in the time domain the second symbol, including the 6n+5 subcarrier of resource unit on frequency domain.

When the running time-frequency resource that the DMRS is occupied is the first symbol in the time domain, including the 6n of resource unit on frequency domain + 3 subcarriers；When being in the time domain the second symbol, including the 6n subcarrier of resource unit on frequency domain.

When the running time-frequency resource that the DMRS is occupied is the first symbol in the time domain, including the 6n of resource unit on frequency domain + 4 subcarriers；When being in the time domain the second symbol, including the 6n+1 subcarrier of resource unit on frequency domain.

When the running time-frequency resource that the DMRS is occupied is the first symbol in the time domain, including the 6n of resource unit on frequency domain + 5 subcarriers；When being in the time domain the second symbol, including the 6n+2 subcarrier of resource unit on frequency domain.

Wherein, n can take more than or equal to 0, and be less thanAny one or more integers.Its specific example and correlation Illustrate to can refer to (c) in Figure 11.

In a kind of possible design, the DMRS is carried at least one resource unit, if the DMRS that system is supported The sum of port is 6, and this 6 DMRS ports are divided into 3 DMRS port groups, wherein the end DMRS in each DMRS port group Mouth is multiplexed identical running time-frequency resource by CDM mode.Then in each resource unit, the running time-frequency resource that the DMRS is occupied has Any one of following characteristics:

For the running time-frequency resource that the DMRS is occupied when time domain is the first symbol, the 3n on frequency domain including resource unit is a Subcarrier；When time domain is the second symbol, including the 3n+2 subcarrier of resource unit on frequency domain.

The running time-frequency resource that the DMRS is occupied is when time domain is the first symbol, including the 3n+1 of resource unit on frequency domain A subcarrier；When time domain is the second symbol, including the 3n subcarrier of resource unit on frequency domain.

The running time-frequency resource that the DMRS is occupied is when time domain is the first symbol, including the 3n+2 of resource unit on frequency domain A subcarrier；When time domain is the second symbol, including the 3n+1 subcarrier of resource unit on frequency domain.

Wherein, n can take more than or equal to 0, and be less thanAny one or more integers.Its specific example and phase Speak on somebody's behalf bright (c) that can refer in Figure 12.

It should be understood that above-mentioned list under different situations, the feature for the running time-frequency resource that a DMRS is occupied.Specific implementation When, other each examples hereinafter can also be with reference to the spy for the running time-frequency resource that the next DMRS of other situations of aforesaid way is occupied Sign, and with the feature of this running time-frequency resource for being inferred to multiple DMRS occupancy, it no longer repeats one by one herein.

Correspondingly, present invention also provides a kind of device for sending DMRS, which be may be implemented described in second aspect The method for sending DMRS.It, can be by software, hard for example, the device can be transmitting terminal (such as base station or terminal etc.) Part or the corresponding software realization above method is executed by hardware.

In a kind of possible design, the apparatus may include processors and memory.The processor is configured as supporting The device executes corresponding function in above-mentioned second aspect method.For memory for coupling with processor, saving the device must The program (instruction) and data wanted.Optionally, which can also include communication interface, for supporting the device and other network elements Between communication.The communication interface can be transceiver.

In alternatively possible design, the apparatus may include: determination unit and transmission unit.Determination unit is for true Determine the running time-frequency resource for carrying DMRS.Transmission unit, for sending the DMRS by the running time-frequency resource.

The third aspect, this application provides a kind of method and apparatus for obtaining DMRS.

In a kind of possible design, this method may include: the running time-frequency resource determined for carrying DMRS；Then, lead to It crosses the running time-frequency resource and obtains the DMRS.

Correspondingly, present invention also provides a kind of device for obtaining DMRS, which be may be implemented described in the third aspect The method for obtaining DMRS.It, can be by software, hard for example, the device can be receiving end (such as base station or terminal etc.) Part or the corresponding software realization above method is executed by hardware.

In a kind of possible design, the apparatus may include processors and memory.The processor is configured as supporting The device executes corresponding function in above-mentioned third aspect method.For memory for coupling with processor, saving the device must The program (instruction) and data wanted.Optionally, which can also include communication interface, for supporting the device and other network elements Between communication.The communication interface can be transceiver.

In alternatively possible design, the apparatus may include: determination unit and acquiring unit.Wherein it is determined that unit It is determined for the running time-frequency resource for carrying DMRS.Acquiring unit can be used for obtaining the DMRS by the running time-frequency resource.

Fourth aspect, this application provides a kind of indicating means and devices.

In a kind of possible design, this method may include: to generate instruction information, which is used to indicate carrying The running time-frequency resource of DMRS；Then, the instruction information is sent.Wherein, the executing subject of this method can be base station.Optionally, should It indicates that information can be index of pilot patterns etc. for indicating the information of pilot patterns, is used to indicate terminal and determines this tune of the base station Spend pilot patterns used in journey.The optional implementation can be adapted for base station and terminal communication when can be used it is more In the scene of a pilot patterns.Optionally, which can be the mark (such as number of DMRS port etc.) of DMRS port Deng for indicating the information of DMRS port, be used to indicate terminal and determine be in this scheduling process of base station the terminal distribution DMRS Port.The optional implementation can be adapted for the field that one or more pilot patterns can be used in communication for base station and terminal Jing Zhong.

Correspondingly, present invention also provides a kind of device for sending DMRS, which be may be implemented described in fourth aspect Indicating means.For example, the device can be base station, corresponding software can be executed by software, hardware or by hardware Realize the above method.

In a kind of possible design, the apparatus may include processors and memory.The processor is configured as supporting The device executes corresponding function in above-mentioned fourth aspect method.For memory for coupling with processor, saving the device must The program (instruction) and data wanted.Optionally, which can also include communication interface, for supporting the device and other network elements Between communication.The communication interface can be transceiver.

In alternatively possible design, the apparatus may include: generation unit and transmission unit.Wherein, generation unit Information is indicated for generating, which is used to indicate the running time-frequency resource of carrying DMRS.Transmission unit is for sending the instruction Information.

5th aspect, this application provides a kind of method and apparatus of determining running time-frequency resource.

In a kind of possible design, this method may include: to receive instruction information, which is used to indicate carrying The running time-frequency resource of DMRS；Then, according to the instruction information, the running time-frequency resource for carrying DMRS is determined.

Correspondingly, the device may be implemented described in the 5th aspect present invention also provides a kind of device for obtaining DMRS The method for determining running time-frequency resource.For example, the device can be terminal, can be executed by software, hardware or by hardware The corresponding software realization above method.

In a kind of possible design, the apparatus may include processors and memory.The processor is configured as supporting The device executes corresponding function in above-mentioned 5th aspect method.For memory for coupling with processor, saving the device must The program (instruction) and data wanted.In addition the device can also include communication interface, for support the device and other network elements it Between communication.The communication interface can be transceiver.

In alternatively possible design, the apparatus may include: receiving unit and determination unit.Wherein, receiving unit Information is indicated for receiving, which is used to indicate the running time-frequency resource of carrying DMRS.Determination unit, for according to the instruction Information determines the running time-frequency resource for carrying DMRS.

Present invention also provides a kind of computer storage mediums, computer program (instruction) are stored thereon, when the program When (instruction) is run on computers, so that computer executes method described in any of the above-described aspect.

Present invention also provides a kind of computer program products, when run on a computer, so that computer executes Method described in any of the above-described aspect.

What is be provided above has mapping relations for carrying between the running time-frequency resource of DMRS and DMRS port, therefore, this The mapping ruler of several DMRS port and running time-frequency resource is additionally provided in application, the specific descriptions regular about every kind and its is had The analysis of beneficial effect can refer to following specific embodiments, and details are not described herein again.

It is to be appreciated that any device or computer storage medium or computer program product of above-mentioned offer are used to Execute corresponding method presented above, method provided above attainable beneficial effect with for carry DMRS when Have mapping relations related between frequency resource and DMRS port, therefore, the attainable beneficial effect of institute can refer to hereafter upper tool The beneficial effect of corresponding scheme in body embodiment, details are not described herein again.

Detailed description of the invention

Fig. 1 is a kind of schematic diagram for pilot patterns that the prior art provides；

Fig. 2 is a kind of schematic diagram of resource unit provided by the embodiments of the present application；

A kind of schematic diagram for system architecture that Fig. 3 is applicable in by technical solution provided by the embodiments of the present application；

Fig. 4 is a kind of structural schematic diagram of base station provided by the embodiments of the present application；

Fig. 5 is a kind of structural schematic diagram of terminal provided by the embodiments of the present application；

Fig. 6 is a kind of interaction schematic diagram of method for transmitting DMRS provided by the embodiments of the present application；

Fig. 6 a is the interaction schematic diagram of the method for another transmission DMRS provided by the embodiments of the present application；

Fig. 7 is the schematic diagram of a kind of pilot patterns under 6 port provided by the embodiments of the present application；

Fig. 8 is the schematic diagram of the another kind of pilot patterns under 6 port provided by the embodiments of the present application；

Fig. 9 is the schematic diagram of the another kind of pilot patterns under 6 port provided by the embodiments of the present application；

Figure 10 is the schematic diagram of the another kind of pilot patterns under 6 port provided by the embodiments of the present application；

Figure 11 is the schematic diagram of the another kind of pilot patterns under 6 port provided by the embodiments of the present application；

Figure 12 is the schematic diagram of the another kind of pilot patterns under 6 port provided by the embodiments of the present application；

Figure 13 is the schematic diagram of the another kind of pilot patterns under 6 port provided by the embodiments of the present application；

Figure 14 is the schematic diagram of the another kind of pilot patterns under 6 port provided by the embodiments of the present application；

Figure 15 is the schematic diagram of a kind of pilot patterns under 8 port provided by the embodiments of the present application；

Figure 16 is the schematic diagram of the another kind of pilot patterns under 8 port provided by the embodiments of the present application；

Figure 17 is the schematic diagram of the another kind of pilot patterns under 8 port provided by the embodiments of the present application；

Figure 18 is the schematic diagram of the another kind of pilot patterns under 8 port provided by the embodiments of the present application；

Figure 19 is the schematic diagram of a kind of pilot patterns under 12 port provided by the embodiments of the present application；

Figure 20 is the schematic diagram of the another kind of pilot patterns under 12 port provided by the embodiments of the present application；

Figure 21 is the schematic diagram of the another kind of pilot patterns under 12 port provided by the embodiments of the present application；

Figure 22 is the schematic diagram of the another kind of pilot patterns under 12 port provided by the embodiments of the present application；

Figure 23 is the schematic diagram of the another kind of pilot patterns under 12 port provided by the embodiments of the present application；

Figure 24 is the schematic diagram of the another kind of pilot patterns under 12 port provided by the embodiments of the present application；

Figure 25 is the schematic diagram of the another kind of pilot patterns under 12 port provided by the embodiments of the present application；

Figure 26 is the schematic diagram of the another kind of pilot patterns under 12 port provided by the embodiments of the present application；

Figure 27 is the schematic diagram of the another kind of pilot patterns under 12 port provided by the embodiments of the present application；

Figure 28 is the schematic diagram of the another kind of pilot patterns under 12 port provided by the embodiments of the present application；

Figure 29 is the schematic diagram of a kind of pilot patterns under 16 port provided by the embodiments of the present application；

Figure 30 is the schematic diagram of the another kind of pilot patterns under 16 port provided by the embodiments of the present application；

Figure 31 is the schematic diagram of the another kind of pilot patterns under 16 port provided by the embodiments of the present application；

Figure 32 is the schematic diagram of the another kind of pilot patterns under 16 port provided by the embodiments of the present application；

Figure 33 is the schematic diagram of the another kind of pilot patterns under 16 port provided by the embodiments of the present application；

Figure 34 is the schematic diagram of the another kind of pilot patterns under 16 port provided by the embodiments of the present application；

Figure 35 is a kind of structural schematic diagram of device for sending DMRS provided by the embodiments of the present application；

Figure 36 is a kind of structural schematic diagram of device for obtaining DMRS provided by the embodiments of the present application；

Figure 37 is a kind of structural schematic diagram of instruction device provided by the embodiments of the present application；

Figure 38 is the structural schematic diagram of the device of determining running time-frequency resource provided by the embodiments of the present application；

Figure 39 is a kind of structural schematic diagram of device for transmitting DMRS provided by the embodiments of the present application.

Specific embodiment

Firstly, simply being introduced the relational language being referred to herein, understood with helping reader:

1), resource unit (resource unit)

Similar in LTE standard RB and RB to (RB pair), a kind of money is provided in some embodiments of the present application Source unit, the resource unit can be used as the basic unit that dispatch terminal carries out resource allocation, can be used for describing a variety of ginsengs Examine the arrangement mode of signal.

Resource unit can be by a time interval (time on multiple subcarriers and time domain continuous on frequency domain Interval, TI) composition.In different scheduling processes, the size of resource unit be may be the same or different.Wherein, here TI can be the Transmission Time Interval (transmission time interval, TTI) in LTE system, be also possible to symbol The short TTI, the slot or miniature time slot being also possible in 5G system of the short TTI of grade or the big subcarrier spacing in radio frequency system (mini-slot) etc..The application does not limit this.

Optionally, a resource unit may include one or more RB, in addition one or more RB pair etc. may be used also To be half of RB etc..In addition it can be other running time-frequency resources, the application is to this without limiting.Wherein, a RB pair It is made of a subframe on 12 continuous subcarriers and time domain on frequency domain.On a subcarrier and time domain on frequency domain A symbol composition running time-frequency resource be a resource element (resource element, RE), as shown in Figure 2.Wherein, scheme RB pair in 2 is by 12 continuous subcarriers (number is 0~11) on frequency domain and 14 symbol (numbers 0 in time domain ~13) it forms.In Fig. 2, abscissa indicates time domain, and ordinate indicates frequency domain.It should be noted that including expression in the application The attached drawing of time-domain resource, which is all based on, to be illustrated for RB pair shown in Fig. 2, it will be appreciated by those skilled in the art that , it is without being limited thereto when specific implementation.It should be understood that " symbol " in the application can include but is not limited to it is following any: Orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol, general filtering are more Carrier wave (universal filtered multi-carrier, UFMC) signal, filter bank multi-carrier (filter-band Multi-carrier, FBMC) symbol, broad sense Frequency Division Multiplex (generalized frequency-division Multiplexing, GFDM) symbol etc..

2), DMRS port group

" DMRS port group " involved in the application is introduced in order to which technical solution provided by the present application is explicitly described A logical concept, specifically, being one introduced in order to which pilot patterns or its modification provided herein are explicitly described A logical concept.It should be understood that in actual implementation, base station and terminal can not execute that be grouped this to DMRS port dynamic Make, is designed by any way such as pilot patterns described in this application or its modification, should belong to the application protection scope Within.

One DMRS port group may include one or more DMRS ports.Each end in the application, in DMRS port group Identical running time-frequency resource is multiplexed by CDM (code division multiplexing) mode between the corresponding DMRS of mouth, such as Orthogonal mask (orthogonal cover code, OCC), cyclic shift (cyclic shift, CS) or cycle phase rotation The methods of (cyclic phase rotations).In relation to multiple reference signals by the technology of CDM mode multiplexing time-frequency resource Clear description has been carried out in scheme in the prior art, and repeats no more herein.

3) DMRS port that system is supported

The DMRS port that system is supported, it is believed that be DMRS port workable for base station.In actual implementation, base station may Use some or all of its support DMRS port dispatch terminal.In the application, the number for the DMRS port supported with system is 6, it is illustrated for 8,12 and 16.

4) other terms

Term " multiple " herein refers to two or more.

Term " first " herein, " second " etc. do not limit its sequence merely to distinguish different objects It is fixed.For example, the first set of symbols and the second set of symbols do not carry out its sequencing just for the sake of distinguishing different set of symbols It limits.

The terms "and/or", only a kind of incidence relation for describing affiliated partner, indicates that there may be three kinds of passes System, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, these three situations of individualism B.In addition, herein Middle character "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or".

Technical solution provided by the present application is introduced with reference to the accompanying drawing.

Technical solution provided by the present application can be applied to various communication systems, such as current 2G, 3G, 4G communication system, And future evolution network, such as 5G communication system.For example, LTE system, third generation partner program (3rd generation Partnership project, 3GPP) relevant cellular system etc. and other such communication systems.In particular, Ke Yiying For in 5G NR system.It should be noted that may include in 5G standard Machine To Machine (machine to machine, M2M), D2M, macro micro- communication, enhanced mobile Internet (enhance mobile broadband, eMBB), ultrahigh reliability (ultra reliable&low latency communication, uRLLC) and magnanimity Internet of Things are communicated with ultralow time delay Scenes, these scenes such as communication (massive machine type communication, mMTC) can include but is not limited to: Communication scenes between terminal and terminal, the communication scenes between base station and base station, the communication scenes etc. between base station and terminal. Technical solution provided by the embodiments of the present application also can be applied to the terminal in 5G communication system and communication or base between terminal In the scenes such as the communication stood between base station.

Technical solution provided by the embodiments of the present application can be applied in system architecture as shown in Figure 3, the system architecture In may include base station 100 and one or more terminals 200 for being connect with base station 100.

In one example, base station 100 can be realized by structure as shown in Figure 4.

Wherein, base station 100 can be the equipment that can be communicated with terminal 200.Base station 100 can be relay station or access point Deng.Base station 100 can be global system for mobile communications (global system for mobile communication, GSM) Or base transceiver station (the base in CDMA (code division multiple access, CDMA) network Transceiver station, BTS), it is also possible to wideband code division multiple access (wideband code division multiple Access, WCDMA) in NB (NodeB), can also be the eNB or eNodeB (evolutional NodeB) in LTE.Base station 100 can also be the wireless controller under cloud Radio Access Network (cloud radio access network, CRAN) scene. Base station 100 can also be the network equipment in the following 5G network or the network equipment in the PLMN network of the following evolution；It can be with It is wearable device or mobile unit etc..

Terminal 200 can be user equipment (user equipment, UE), access terminal, UE unit, the station UE, movement station, Mobile station, remote station, remote terminal, mobile device, UE terminal, terminal, wireless telecom equipment, UE agency or UE device etc..It connects Entering terminal can be cellular phone, wireless phone, session initiation protocol (session initiation protocol, SIP) electricity It talks about, wireless local loop (wireless local loop, WLL) is stood, personal digital assistant (personal digital Assistant, PDA), the handheld device with wireless communication function, calculate equipment or be connected to radio modem its Its processing equipment, mobile unit, wearable device, the terminal in the following 5G network or the end in the PLMN network of the following evolution End etc..

The common hardware framework of base station 100 is illustrated.As shown in figure 4, base station may include indoor baseband processing unit (building baseband unit, BBU) and far-end RF module (remote radio unit, RRU), RRU and antenna feeder system System (i.e. antenna) connection, BBU and RRU can according to need and dismantle use.It should be noted that base station 100 is also during specific implementation Other common hardware frameworks can be used, and are not intended to be limited to common hardware framework shown in Fig. 4.

By taking terminal 200 is mobile phone as an example, the common hardware framework of mobile phone is illustrated.As shown in figure 5, mobile phone can wrap It includes: radio frequency (radio Frequency, RF) circuit 110, memory 120, other input equipments 130, display screen 140, sensor 150, the components such as voicefrequency circuit 160, I/O subsystem 170, processor 180 and power supply 190.Those skilled in the art can manage Solution, the structure of mobile phone shown in fig. 5 do not constitute the restriction to mobile phone, may include more than diagram or less component, Perhaps certain components are combined and perhaps split certain components or different component layouts.It will be appreciated by those skilled in the art that aobvious Display screen 140 belongs to user interface (user Interface, UI), and display screen 140 may include display panel 141 and touch panel 142.And mobile phone may include than illustrating more or less component.Although being not shown, mobile phone can also include camera, indigo plant The functional modules such as tooth module or device, details are not described herein.

Further, processor 180 respectively with RF circuit 110, memory 120, voicefrequency circuit 160, I/O subsystem 170, And power supply 190 is all connected with.I/O subsystem 170 connects with other input equipments 130, display screen 140, sensor 150 respectively It connects.Wherein, RF circuit 110 can be used for receiving and sending messages or communication process in, signal sends and receivees, particularly, by base station After downlink information receives, handled to processor 180.Memory 120 can be used for storing software program and module.Processor 180 It is stored in the software program and module of memory 120, by running thereby executing the various function application and data of mobile phone Processing.Other input equipments 130 can be used for receiving the number or character information of input, and generate with the user setting of mobile phone with And the related key signals input of function control.Display screen 140 can be used for showing information input by user or be supplied to user's The various menus of information and mobile phone can also receive user's input.Sensor 150 can be optical sensor, motion sensor Or other sensors.Voicefrequency circuit 160 can provide the audio interface between user and mobile phone.I/O subsystem 170 is used to control The external equipment of input and output, external equipment may include other equipment input controller, sensor controller, display control Device.Processor 180 is that the control centre of mobile phone 200 is passed through using the various pieces of various interfaces and connection whole mobile phone Operation executes the software program and/or module being stored in memory 120, and calls the number being stored in memory 120 According to the various functions and processing data of execution mobile phone 200, to carry out integral monitoring to mobile phone.Power supply 190 (such as battery) is used It powers in above-mentioned all parts, it is preferred that power supply can be logically contiguous by power-supply management system and processor 180, thus The functions such as management charging, electric discharge and power consumption are realized by power-supply management system.

Technical solution provided by the present application can be used in single carrier transmission scene, can be used for multi-carrier transmission scene In；It can be applied in uplink scene, also can be applied in downlink transfer scene.

The method of transmission DMRS provided by the present application is illustrated below, wherein the method for transmitting DMRS may include The method that transmitting terminal sends the method for DMRS and receiving end obtains DMRS.

As shown in fig. 6, for a kind of method for transmitting DMRS provided by the present application.This method may include:

S101: transmitting terminal determines that the time-frequency for carrying DMRS provides.

Wherein, which is carried at least one resource unit, then in each resource unit, the DMRS occupy when The running time-frequency resource that the feature of frequency resource can be occupied with reference to any one DMRS in any one attached drawing of Fig. 7~Figure 34 and associated description Feature.

S102: transmitting terminal sends DMRS by the running time-frequency resource.

S103: receiving end determines the running time-frequency resource for carrying DMRS.

S104: receiving end obtains DMRS by identified running time-frequency resource.

Wherein, the running time-frequency resource for carrying DMRS may include one or more symbols in the time domain, can on frequency domain To include one or more subcarriers.When in the time domain including multiple symbols, multiple symbol can be continuous or discrete Multiple symbols.When on frequency domain including multiple subcarriers, this multiple subcarrier can be continuous or discrete multiple sons Carrier wave, the application is to this without limiting.Before S102 after S101, this method can also include: that transmitting terminal reflects DMRS On running time-frequency resource determined by being incident upon.About the attainable beneficial effect of associated description and institute of the running time-frequency resource, can join It examines hereafter.

If the technical solution is applied in uplink scene, transmitting terminal can be terminal, and receiving end can be base station. If the technical solution is applied in downlink transfer scene, transmitting terminal can be base station, and receiving end can be terminal.

It as shown in Figure 6 a, is the method for another transmission DMRS provided by the present application.This method may include:

S201: base station generates instruction information, which is used to indicate the running time-frequency resource of carrying DMRS.

S202: base station sends the instruction information to terminal.

S203: terminal receives the instruction information, and determines the running time-frequency resource for carrying DMRS according to the instruction information.

S204: terminal obtains DMRS by identified running time-frequency resource.

One DMRS port corresponds to a DMRS, and a DMRS can be carried on one or more RE.On the one hand, base Stand and terminal used in the mapping ruler of DMRS port and running time-frequency resource can be fixed and invariable, be also possible to semi-static tune Whole, it can also be dynamic adjustment.On the other hand, base station is that the DMRS port of terminal distribution can be semi-static adjustment, It is also possible to what dynamic adjusted.Wherein, can be led to when semi-static adjustment or dynamic adjust based on face either in these two aspects Instruction mode notice opposite end is crossed, which can include but is not limited to following any: wireless heterogeneous networks (radio resource control, RRC) signaling, media access control (media access control, MAC) signaling, Downlink Control Information (downlink control information, DCI) etc..

Optionally, which may include DMRS port information, such as the number of DMRS port etc., be used to indicate base It stands as the corresponding running time-frequency resource of DMRS port of the terminal distribution.

The method of transmission DMRS provided by the present application, the mapping by the way that reasonable DMRS port and running time-frequency resource is arranged are advised Then, the above method is enabled to be applied in NR scene complicated and changeable.

The mapping ruler of several DMRS port and running time-frequency resource is additionally provided based on this, in the application.Before this, first It first needs to illustrate the following:

First, in the application, for ease of description, the DMRS port supported of system can be with serial number, such as connect since 1 It is continuous to be numbered.For example, this 6 DMRS ports are labeled as DMRS port 1~6 if system supports 6 DMRS ports.This In application, for ease of description, a resource unit include in the time domain symbol since 0 serial number, and wrapped on frequency domain The subcarrier included is numbered from 0.For example, then the RB pair is in time domain so that a resource unit is a RB pair as an example On may include symbol 0~13, may include subcarrier 0~11 on frequency domain.Certainly without being limited thereto when specific implementation.It should infuse Meaning, described above is for the setting carried out convenient for describing the purpose of technical solution provided by the embodiments of the present application, and simultaneously It is non-to be used to limit scope of the present application.

Second, DMRS port can be mapped on one or more symbols of resource unit, optionally, this or more A symbol can be the front symbol, middle part symbol or rear portion symbol of TI, wherein front symbol refers to that position is forward in a TI Symbol, for example, it may be symbol (i.e. the 2nd symbol) and/or number that the number in corresponding LTE in a subframe is 2 are 3 Symbol (i.e. the 3rd symbol) etc..Specifically it is defined as which symbol in a subframe, the application couple as front symbol This is without limiting.Alternatively, the one or more symbol can be middle part symbol, wherein middle part symbol refers in a subframe Symbol among position, for example, it may be symbol (i.e. the 5th symbol) and/or number that a total number of subframe is 5 are 6 Symbol (i.e. the 6th symbol) etc..Specifically it is defined as which symbol in a subframe, the application couple as middle part symbol This is without limiting.Alternatively, the one or more symbol can be rear portion symbol, wherein rear portion symbol refers in a subframe Symbol among position, for example, it may be symbol (i.e. the 9th symbol) and/or number that a total number of subframe is 9 are 10 Symbol (i.e. the 10th symbol) etc..Specifically it is defined as which symbol in a subframe, the application as rear portion symbol To this without limiting.It should be understood that in actual implementation, if DMRS port is mapped on multiple symbols, multiple symbol Number it can be different types of symbol, wherein the type includes front symbol, middle part symbol and rear portion symbol.For example, multiple Part in symbol can be front symbol, and another part is middle part symbol etc..

Hereinafter, if DMRS port is mapped on a symbol, which is known as the first symbol.If DMRS port It is mapped on multiple symbols, then the first symbol and the second symbol, Wei Lijin is referred to as 2 symbols with multiple symbol Row explanation.Wherein, the first symbol and the second symbol can be continuously, be also possible to discrete.That is: the first symbol and second Symbol can be adjacent symbol, be also possible to non-conterminous symbol.It is with the first symbol and in specific example hereafter Two symbols be it is continuous for be illustrated, be specifically symbol that the number in a subframe is 2 with the first symbol, second Symbol is illustrated for the symbol that the number in a subframe is 3, in actual implementation, without being limited thereto.

It should be understood that DMRS port here refers to all DMRS ports that system is supported, as in actual implementation, The DMRS port for whether having used this all in scheduling process, the part in DMRS port for still having used this all DMRS port, the application is without limiting.

It should be understood that in this application, part or all of DMRS can be mapped on the symbol of front, in this way, comparing The prior art, receiving end can quickly receive DMRS, so as to start to carry out data demodulation, can satisfy in NR quickly The demand of data demodulation.

Third, the associated description about DMRS port group can refer to above.You need to add is that the application is to which end Mouthful as a DMRS port group specific implementation without restriction.For example, if being 2 groups by 1~8 point of DMRS port, It can be using any 4 ports in DMRS port as a DMRS port group, and using 4 other ports as one DMRS port group.In addition, not including the same DMRS port in different DMRS port groups.For another example, if by 1~12 point of DMRS port It is 3 groups, then can be using any 4 ports in DMRS port as a DMRS port group, and by other 8 DMRS port In any 4 ports as a DMRS port group, then using 4 other ports as a DMRS port group.

4th, the mapping ruler of several DMRS port and running time-frequency resource is hereinafter illustrated, it specifically can be by leading Frequency schemes (pattern) to be shown.During specific implementation, above-mentioned mapping ruler can by formula, table or its His mode is realized.During specific implementation, receiving end can by DMRS port or be used to indicate DMRS it is corresponding when The other information of frequency resource knows the corresponding running time-frequency resource of DMRS.How to be obtained from the running time-frequency resource as receiving end DMRS, the application, without limiting, can use method in the prior art and realize to this.In principle, if m DMRS port It is multiplexed by CDM mode, as long as then receiving end can obtain m on being greater than or equal to the RE that m carries this m DMRS port DMRS port.Wherein, m is greater than the integer equal to 2.The specific value (usually plural number, i.e. modulation symbol) of DMRS usually takes From a sequence of values, the specific value of selection by the multiplexed code load for realizing CDM distributed for the DMRS it is multiple On RE, specific loading method can refer to the prior art, and these RE can be corresponded in the different sub-carrier of same symbol, The same sub-carrier of distinct symbols can be corresponded to, the different sub-carrier of distinct symbols can also be corresponded to.

5th, hereinafter the number of sub carrier wave by resource unit on frequency domain is illustrated for being M, wherein M is big In or equal to 1 integer.For example, if resource unit is 1 RB pair (2 RB i.e. on time domain direction), M=12；If money Source unit is 2 RB of frequency domain direction, then M=24.

In addition, showing the corresponding RE of symbol for being mapped with DMRS port in Figure of description.Other symbols are not shown Corresponding RE, the application is to the information carried on other RE without limiting.

Illustrate the mapping ruler of DMRS port provided by the present application and running time-frequency resource below:

The sum for the DMRS port that system is supported is 6

One, the running time-frequency resource of 6 DMRS ports mapping includes the first symbol of resource unit in the time domain.

1), 6 DMRS ports include: the first DMRS port, the second DMRS port, third DMRS port, the 4th end DMRS Mouth, the 5th DMRS port and the 6th DMRS port.It should be noted that " comprising " specifically refers to " for ".Each example hereinafter It is similar, no longer describe one by one.The mapping ruler of this 6 DMRS ports is as follows:

The first:

The running time-frequency resource of first DMRS port mapping includes the 6n subcarrier of resource unit on frequency domain.

The running time-frequency resource of second DMRS port mapping includes the 6n+1 subcarrier of resource unit on frequency domain.

The running time-frequency resource of third DMRS port mapping includes the 6n+2 subcarrier of resource unit on frequency domain.

The running time-frequency resource of 4th DMRS port mapping includes the 6n+3 subcarrier of resource unit on frequency domain.

The running time-frequency resource of 5th DMRS port mapping includes the 6n+4 subcarrier of resource unit on frequency domain.

The running time-frequency resource of 6th DMRS port mapping includes the 6n+5 subcarrier of resource unit on frequency domain.

Wherein, n can take more than or equal to 0, and be less thanAny one or more integers.

Herein,It indicates to be rounded downwards.In addition, in various mapping rulers provided herein, if carrying is multiple The running time-frequency resource of DMRS port (carrying the corresponding DMRS of multiple DMRS ports) does not take the complete of resource unit in frequency domain When portion's subcarrier, these subcarriers for carrying DMRS port can also carry out a degree of offset as needed, such as carry The 6n subcarrier of above-mentioned first DMRS port can become 6n+ Δ subcarrier after offset, and wherein Δ is Preset offset.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (a) in Fig. 7 Grid indicates the RE, n=0,1 that a DMRS port is mapped to.

Second:

The running time-frequency resource of first DMRS port mapping is in 12n, 12n+1 subcarriers on frequency domain including resource unit At least one.

The running time-frequency resource of second DMRS port mapping includes 12n+2,12n+3 subcarriers of resource unit on frequency domain At least one of.

The running time-frequency resource of third DMRS port mapping includes 12n+4,12n+5 subcarriers of resource unit on frequency domain At least one of.

The running time-frequency resource of 4th DMRS port mapping includes 12n+6,12n+7 subcarriers of resource unit on frequency domain At least one of.

The running time-frequency resource of 5th DMRS port mapping includes 12n+8,12n+9 subcarriers of resource unit on frequency domain At least one of.

12n+10,12n+11 sons of the running time-frequency resource of 6th DMRS port mapping on frequency domain including resource unit carry At least one of wave.

Wherein, n can take more than or equal to 0, and be less than or equal toAny one or more integers.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (b) in Fig. 7 Grid indicates the RE, n=0 that a DMRS port group is mapped to.

2), 6 DMRS ports are divided into 3 DMRS port groups, and each DMRS port group includes 2 DMRS ports.3 DMRS Port set includes the first DMRS port group, the second DMRS port group and third DMRS port group.It is each in each DMRS port group Identical running time-frequency resource is multiplexed by CDM mode between the corresponding DMRS of DMRS port.The mapping ruler of this 3 DMRS port groups It is as follows:

The first:

The running time-frequency resource of first DMRS port group mapping includes the 3n subcarrier of resource unit on frequency domain.

The running time-frequency resource of second DMRS port group mapping includes the 3n+1 subcarrier of resource unit on frequency domain.

The running time-frequency resource of third DMRS port group mapping includes the 3n+2 subcarrier of resource unit on frequency domain.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (a) in Fig. 8 Grid indicates the RE that a DMRS port group is mapped to, n=0,1,2,3.For example, it may be by any 3 in DMRS port A port is as a DMRS port group, and using 3 other ports as a DMRS port group.For example, by DMRS port 1 ~3 are used as the first DMRS port group, regard DMRS port 4~6 as the second DMRS port group.Certainly it is not limited to when specific implementation This.In this scheme, each port is evenly distributed on frequency domain, and has higher density, can guarantee higher letter in several scenes Road estimated accuracy.In addition, the program due to each port be evenly distributed on frequency domain and mutually it is discrete, have ebb mean value The characteristic of power ratio (peak-to-average power ratio, PAPR), can be suitable for multicarrier, single carrier, just simultaneously In uplink and downlink, more waveform co-designs, it is suitable for multiuser MIMO (multi-user MIMO, MU-MIMO) scene MU-MIMO Scene reduces system DMRS instruction expense and design complexities.The program only takes up 1 symbol, and overhead is low, and can be with Using in high frequency scene.The program can also support more ports by way of increasing symbol, have preferably flexibility. Further, since uniform mapping of the port on frequency domain, is convenient for flexible dispatching.Vacant port set position can be enhanced with power (powerboosting) or transmission data.

Second:

The running time-frequency resource of first DMRS port group mapping on frequency domain including 12n, 12n+1 of resource unit, 12n+6, At least one of 12n+7 subcarrier.

The running time-frequency resource of second DMRS port group mapping includes 12n+2,12n+3,12n+ of resource unit on frequency domain 8, at least one of 12n+9 subcarrier.

The running time-frequency resource of third DMRS port group mapping includes 12n+4,12n+5,12n+ of resource unit on frequency domain 10, at least one of 12n+11 subcarrier.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (b) in Fig. 8 Grid indicates the RE, n=0 that a DMRS port group is mapped to.

3), 6 DMRS ports are divided into 2 DMRS port groups, and each DMRS port group includes 3 DMRS ports.2 DMRS Port set includes the first DMRS port group and the second DMRS port group.Each DMRS port in each DMRS port group is corresponding Identical running time-frequency resource is multiplexed by CDM mode between DMRS.The mapping ruler of this 3 DMRS port groups is as follows:

The first:

The running time-frequency resource of first DMRS port group mapping includes the 2n subcarrier of resource unit on frequency domain.

The running time-frequency resource of second DMRS port group mapping includes the 2n+1 subcarrier of resource unit on frequency domain.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (a) in Fig. 9 Grid indicates the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5.In this scheme, each port is divided on frequency domain Cloth is uniform, and has high density, can guarantee higher channel estimated accuracy in several scenes.In addition, the program is due to each end Mouth is evenly distributed and mutually discrete on frequency domain, therefore the characteristic with low PAPR, can be suitable for multicarrier, single load simultaneously Wave is convenient for uplink and downlink, more waveform co-designs, is suitable for MU-MIMO scene, reduces system DMRS instruction expense and design is multiple Miscellaneous degree.The program only takes up 1 symbol, and overhead is low, and can be used in high frequency scene.The program can also pass through increase The mode of symbol supports more ports, has preferably flexibility.Further, since uniform mapping of the port on frequency domain, just In flexible dispatching.Vacant port set position can enhance with power or transmit data.

Second:

The running time-frequency resource of first DMRS port group mapping on frequency domain including 12n, 12n+1 of resource unit, 12n+2, At least one of 12n+6,12n+7,12n+8 subcarriers.

The running time-frequency resource of second DMRS port group mapping includes 12n+3,12n+4,12n+ of resource unit on frequency domain 5, at least one of 12n+9,12n+10,12n+11 subcarriers.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (b) in Fig. 9 Grid indicates the RE, n=0 that a DMRS port group is mapped to.

4) identical running time-frequency resource, is multiplexed by CDM mode between the corresponding DMRS of 6 DMRS ports.In this case, can To regard this 6 DMRS ports as a DMRS port group.The mapping ruler of the DMRS port group is as follows:

The first:

The running time-frequency resource of DMRS port group mapping includes the 2n subcarrier of resource unit on frequency domain；Alternatively,

The running time-frequency resource of DMRS port group mapping includes the 2n+1 subcarrier of resource unit on frequency domain.

As shown in (a) in Figure 10, be 6 DMRS ports a kind of mapping ruler schematic diagram, wherein be in the figure with What the running time-frequency resource of DMRS port group mapping was illustrated for the 2n subcarrier on frequency domain including resource unit.Often Kind shade lattice indicates the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5.The expression of blank lattice does not have It is mapped the RE of DMRS port.

Second:

The running time-frequency resource of DMRS port group mapping includes n-th of subcarrier of resource unit on frequency domain.

Wherein, n can take more than or equal to 0, and be less than any one or more integers of M.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (b) in Figure 10 Grid indicates the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5,6,7,8,9,10,11.

Two, the running time-frequency resource of 6 DMRS ports mapping includes the first symbol and the second symbol of resource unit in the time domain.

1), 6 DMRS ports include: the first DMRS port, the second DMRS port, third DMRS port, the 4th end DMRS Mouth, the 5th DMRS port and the 6th DMRS port.The mapping ruler of this 6 DMRS ports is as follows:

The first: the running time-frequency resource of 6 DMRS ports mapping is in the subcarrier and Fig. 7 on frequency domain including resource unit (a) the first scheme corresponding to is identical.Shown in (a) in a kind of example in this case such as Figure 11.

The running time-frequency resource of second: 6 DMRS port mapping is in the subcarrier and Fig. 7 on frequency domain including resource unit (b) second scheme corresponding to is identical.Shown in (b) in a kind of example in this case such as Figure 11.

The third: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, and:

When the running time-frequency resource of first DMRS port mapping is the first symbol in the time domain, including resource unit on frequency domain The 6n subcarrier；When being in the time domain the second symbol, including the 6n+3 subcarrier of resource unit on frequency domain.

When the running time-frequency resource of second DMRS port mapping is the first symbol in the time domain, including resource unit on frequency domain The 6n+1 subcarrier；When being in the time domain the second symbol, including the 6n+4 subcarrier of resource unit on frequency domain.

When the running time-frequency resource of third DMRS port mapping is the first symbol in the time domain, including resource unit on frequency domain The 6n+2 subcarrier；When being in the time domain the second symbol, including the 6n+5 subcarrier of resource unit on frequency domain.

When the running time-frequency resource of 4th DMRS port mapping is the first symbol in the time domain, including resource unit on frequency domain The 6n+3 subcarrier；When being in the time domain the second symbol, including the 6n subcarrier of resource unit on frequency domain.

When the running time-frequency resource of 5th DMRS port mapping is the first symbol in the time domain, including resource unit on frequency domain The 6n+4 subcarrier；When being in the time domain the second symbol, including the 6n+1 subcarrier of resource unit on frequency domain.

When the running time-frequency resource of 6th DMRS port mapping is the first symbol in the time domain, including resource unit on frequency domain The 6n+5 subcarrier；When being in the time domain the second symbol, including the 6n+2 subcarrier of resource unit on frequency domain.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (c) in Figure 11 Grid indicates the RE, n=0,1 that a DMRS port is mapped to.

4th kind: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, and:

When the running time-frequency resource of first DMRS port mapping is the first symbol in the time domain, including resource unit on frequency domain 12n, 12n+1 subcarriers；When being in the time domain the second symbol, including 12n+6,12n+7 of resource unit on frequency domain At least one of a subcarrier.

When the running time-frequency resource of second DMRS port mapping is the first symbol in the time domain, including resource unit on frequency domain 12n+2,12n+3 subcarriers；When being in the time domain the second symbol, including 12n+8,12n+ of resource unit on frequency domain At least one of 9 subcarriers.

When the running time-frequency resource of third DMRS port mapping is the first symbol in the time domain, including resource unit on frequency domain 12n+4,12n+5 subcarriers；When being in the time domain the second symbol, including 12n+10,12n of resource unit on frequency domain At least one of+11 subcarriers.

When the running time-frequency resource of 4th DMRS port mapping is the first symbol in the time domain, including resource unit on frequency domain 12n+6,12n+7 subcarriers；When being in the time domain the second symbol, including 12n, 12n+1 of resource unit on frequency domain At least one of a subcarrier.

When the running time-frequency resource of 5th DMRS port mapping is the first symbol in the time domain, including resource unit on frequency domain 12n+8,12n+9 subcarriers；When being in the time domain the second symbol, including 12n+2,12n+ of resource unit on frequency domain At least one of 3 subcarriers.

When the running time-frequency resource of 6th DMRS port mapping is the first symbol in the time domain, including resource unit on frequency domain At least one of 12n+10,12n+11 subcarriers；It include resource unit on frequency domain when being in the time domain the second symbol At least one of 12n+4,12n+5 subcarriers.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (d) in Figure 11 Grid indicates the RE, n=0 that a DMRS port group is mapped to.

The first: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, also, each The running time-frequency resource of DMRS port group mapping can refer to the first scheme corresponding to (a) in Fig. 8 on frequency domain.In this case Shown in (a) in a kind of example such as Figure 12.In this scheme, each port is evenly distributed on frequency domain, and is distributed in two simultaneously Symbol has high density, can guarantee higher channel estimated accuracy in several scenes.In addition, the program is existed due to each port It is evenly distributed on frequency domain and mutually discrete, therefore the characteristic with low PAPR, multicarrier, single carrier can be suitable for simultaneously, just In uplink and downlink, more waveform co-designs, it is suitable for MU-MIMO scene, reduces system DMRS instruction expense and design complexities. In addition, in the program, the method that more multiport is multiplexed in each port set is propped up under the premise of not changing original port mapping The transmission of more multiport is held, is had preferably universal.Further, since uniform mapping of the port on frequency domain, convenient for flexibly adjusting Degree.Vacant port set position can enhance with power or transmit data.CDM length is small, and orthogonality is more preferably protected between port Card.

Second: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, also, each The running time-frequency resource of DMRS port group mapping can refer to second scheme corresponding to (b) in Fig. 8 on frequency domain.In this case Shown in (b) in a kind of example such as Figure 12.

The running time-frequency resource of first DMRS port group mapping includes resource unit on frequency domain when time domain is the first symbol The 3n subcarrier；When time domain is the second symbol, including the 3n+2 subcarrier of resource unit on frequency domain.

The running time-frequency resource of second DMRS port group mapping includes resource unit on frequency domain when time domain is the first symbol The 3n+1 subcarrier；When time domain is the second symbol, including the 3n subcarrier of resource unit on frequency domain.

The running time-frequency resource of third DMRS port group mapping includes resource unit on frequency domain when time domain is the first symbol The 3n+2 subcarrier；When time domain is the second symbol, including the 3n+1 subcarrier of resource unit on frequency domain.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (c) in Figure 12 Grid indicates the RE that a DMRS port group is mapped to, n=0,1,2,3.

The running time-frequency resource of first DMRS port group mapping includes resource unit on frequency domain when time domain is the first symbol The 3n subcarrier；When time domain is the second symbol, including the 3n+1 subcarrier of resource unit on frequency domain.

The running time-frequency resource of second DMRS port group mapping includes resource unit on frequency domain when time domain is the first symbol The 3n+1 subcarrier；When time domain is the second symbol, including the 3n+2 subcarrier of resource unit on frequency domain.

The running time-frequency resource of third DMRS port group mapping includes resource unit on frequency domain when time domain is the first symbol The 3n+2 subcarrier；When time domain is the second symbol, including the 3n subcarrier of resource unit on frequency domain.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (d) in Figure 12 Grid indicates the RE that a DMRS port group is mapped to, n=0,1,2,3.

5th kind: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, and:

The running time-frequency resource of first DMRS port group mapping includes resource unit on frequency domain when time domain is the first symbol At least one of 12n, 12n+1,12n+6,12n+7 subcarriers；When being in the time domain the second symbol, include on frequency domain At least one of 12n+4,12n+5,12n+10,12n+11 subcarriers of resource unit.

The running time-frequency resource of second DMRS port group mapping includes resource unit on frequency domain when time domain is the first symbol At least one of 12n+2,12n+3,12n+8,12n+9 subcarriers；When being in the time domain the second symbol, wrapped on frequency domain Include at least one of 12n, 12n+1,12n+6,12n+7 subcarriers of resource unit.

The running time-frequency resource of third DMRS port group mapping includes resource unit on frequency domain when time domain is the first symbol At least one of 12n+4,12n+5,12n+10,12n+11 subcarriers；When being in the time domain the second symbol, on frequency domain At least one of 12n+2,12n+3,12n+8,12n+9 subcarriers including resource unit.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (e) in Figure 12 Grid indicates the RE, n=0 that a DMRS port group is mapped to.

6th kind: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, and:

The running time-frequency resource of first DMRS port group mapping includes resource unit on frequency domain when time domain is the first symbol At least one of 12n, 12n+1,12n+6,12n+7 subcarriers；When being in the time domain the second symbol, include on frequency domain At least one of 12n+2,12n+3,12n+8,12n+9 subcarriers of resource unit.

The running time-frequency resource of second DMRS port group mapping includes resource unit on frequency domain when time domain is the first symbol At least one of 12n+2,12n+3,12n+8,12n+9 subcarriers；When being in the time domain the second symbol, wrapped on frequency domain Include at least one of 12n+4,12n+5,12n+10,12n+11 subcarriers of resource unit.

The running time-frequency resource of third DMRS port group mapping includes resource unit on frequency domain when time domain is the first symbol At least one of 12n+4,12n+5,12n+10,12n+11 subcarriers；When being in the time domain the second symbol, on frequency domain At least one of 12n, 12n+1,12n+6,12n+7 subcarriers including resource unit.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (f) in Figure 12 Grid indicates the RE, n=0 that a DMRS port group is mapped to.

3), 6 DMRS ports are divided into 2 DMRS port groups, and each DMRS port group includes 3 DMRS ports.2 DMRS Port set include the first DMRS port group and the second DMRS port group and.Each DMRS port in each DMRS port group is corresponding Identical running time-frequency resource is multiplexed by CDM mode between DMRS.The mapping ruler of this 3 DMRS port groups is as follows:

The first: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, also, each The running time-frequency resource of DMRS port group can refer to the first scheme corresponding to (a) in Fig. 9 on frequency domain.One kind in this case Shown in (a) in example such as Figure 13.In this scheme, each port is evenly distributed on frequency domain, and is distributed in two symbols simultaneously, With high density, it can guarantee higher channel estimated accuracy in several scenes.In addition, the program is since each port is on frequency domain It is evenly distributed and mutually discrete, therefore the characteristic with low PAPR, multicarrier, single carrier can be suitable for simultaneously, convenient for up and down Capable, more waveform co-designs are suitable for MU-MIMO scene, reduce system DMRS instruction expense and design complexities.In addition, In the program, the method that more multiport is multiplexed in each port set is supported more under the premise of not changing original port mapping The transmission of multiport has preferably universal.Additionally due to uniform mapping of the port on frequency domain, is convenient for flexible dispatching.It is empty Remaining port set position can enhance with power or transmit data.And CDM length is small in port set, and orthogonality is able between port It is more preferable to guarantee.

Second: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, also, each The running time-frequency resource of DMRS port group mapping can refer to second scheme corresponding to (b) in Fig. 9 on frequency domain.In this case Shown in (b) in a kind of example such as Figure 13.

The running time-frequency resource of first DMRS port group mapping includes resource unit on frequency domain when time domain is the first symbol The 2n subcarrier；When time domain is the second symbol, including the 2n+1 subcarrier of resource unit on frequency domain.

The running time-frequency resource of second DMRS port group mapping includes resource unit on frequency domain when time domain is the first symbol The 2n+1 subcarrier；When time domain is the second symbol, including the 2n subcarrier of resource unit on frequency domain.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (c) in Figure 13 Grid indicates the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5.

The running time-frequency resource of first DMRS port group mapping includes resource unit on frequency domain when time domain is the first symbol At least one of 12n, 12n+1,12n+2,12n+6,12n+7,12n+8 subcarriers；When time domain is the second symbol, At least one in 12n+3,12n+4,12n+5,12n+9,12n+10,12n+11 subcarriers on frequency domain including resource unit It is a.

The running time-frequency resource of second DMRS port group mapping includes resource unit on frequency domain when time domain is the first symbol At least one of 12n+3,12n+4,12n+5,12n+9,12n+10,12n+11 subcarriers；It is the second symbol in time domain When, on frequency domain including resource unit 12n, 12n+1,12n+2,12n+6,12n+7,12n+8 subcarriers at least One.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (d) in Figure 13 Grid indicates the RE, n=0 that a DMRS port group is mapped to.

When the running time-frequency resource of first DMRS port group mapping is the first symbol and the second symbol in the time domain, on frequency domain At least one of 12n, 12n+1,12n+4,12n+5,12n+8,12n+9 subcarriers including resource unit.

The running time-frequency resource of second DMRS port group mapping wraps on frequency domain when time domain is the first symbol and the second symbol Include at least one of 12n+2,12n+3,12n+6,12n+7,12n+10,12n+11 subcarriers of resource unit.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (e) in Figure 13 Grid indicates the RE, n=0 that a DMRS port group is mapped to.

When the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain, including resource unit on frequency domain At least one of 12n, 12n+1,12n+4,12n+5,12n+8,12n+9 subcarriers；When being accorded in the time domain for second, At least one in 12n+2,12n+3,12n+6,12n+7,12n+10,12n+11 subcarriers on frequency domain including resource unit It is a.

The running time-frequency resource of second DMRS port group mapping includes resource unit on frequency domain when time domain is the first symbol At least one of 12n+2,12n+3,12n+6,12n+7,12n+10,12n+11 subcarriers；It is in the time domain the second symbol When, on frequency domain including resource unit 12n, 12n+1,12n+4,12n+5,12n+8,12n+9 subcarriers at least One.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (f) in Figure 13 Grid indicates the RE, n=0 that a DMRS port group is mapped to.

The first: the running time-frequency resource of DMRS port group mapping includes the first symbol and the second symbol, also, the end DMRS The running time-frequency resource of mouth group mapping can refer to the first scheme corresponding to (a) in Figure 10 on frequency domain.One kind in this case Shown in (a) in example such as Figure 14.

Second: the running time-frequency resource of DMRS port group mapping includes the first symbol and the second symbol, also, the end DMRS The running time-frequency resource of mouth group mapping can refer to second scheme corresponding to (b) in Figure 10 on frequency domain.One kind in this case Shown in (b) in example such as Figure 14.

The third:

The running time-frequency resource of DMRS port group mapping when time domain is the first symbol, on frequency domain including resource unit the 2n subcarrier；When time domain is the second symbol, including the 2n+1 subcarrier of resource unit on frequency domain.

It is a kind of schematic diagram of mapping ruler of 6 DMRS ports, wherein every kind of shade is small as shown in (c) in Figure 14 Grid indicates the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5.The expression of blank lattice is not mapped The RE of DMRS port.

The sum for the DMRS port that system is supported is 8

One, the running time-frequency resource of 8 DMRS ports mapping includes the first symbol of resource unit in the time domain.

8 DMRS ports are divided into 4 DMRS port groups, and each DMRS port group includes 2 DMRS ports.2 ends DMRS Mouth group includes the first DMRS port group, the second DMRS port group, third DMRS port group and the 4th DMRS port group.Each DMRS Identical running time-frequency resource is multiplexed by CDM mode between the corresponding DMRS of each DMRS port in port set.This 4 DMRS ports The mapping ruler of group is as follows:

12n, 12n+1, the 12n+2 of the running time-frequency resource of first DMRS port group mapping on frequency domain including resource unit are a At least one of subcarrier.

The running time-frequency resource of second DMRS port group mapping includes 12n+3,12n+4,12n+5 of resource unit on frequency domain At least one of a subcarrier.

The running time-frequency resource of third DMRS port group mapping includes 12n+6,12n+7,12n+8 of resource unit on frequency domain At least one of a subcarrier.

The running time-frequency resource of 4th DMRS port group mapping includes 12n+9,12n+10,12n+ of resource unit on frequency domain At least one of 11 subcarriers.

It as shown in figure 15, is a kind of schematic diagram of mapping ruler of 8 DMRS ports, wherein every kind of shade lattice table Show the RE that a DMRS port group is mapped to, n=0.

Two, the running time-frequency resource of 8 DMRS ports mapping includes the first symbol and the second symbol of resource unit in the time domain.

1), 8 DMRS ports are divided into 4 DMRS port groups, and each DMRS port group includes 2 DMRS ports.2 DMRS Port set includes the first DMRS port group, the second DMRS port group, third DMRS port group and the 4th DMRS port group.Each Identical running time-frequency resource is multiplexed by CDM mode between the corresponding DMRS of each DMRS port in DMRS port group.This 4 DMRS The mapping ruler of port set is as follows:

The first: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, also, each The running time-frequency resource of DMRS port group mapping can refer to scheme corresponding to Figure 15 in frequency domain.A kind of example such as Figure 16 in this case In (a) shown in.

Second: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, and:

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain At least one of 12n, 12n+1,12n+2 subcarriers；It include resource on frequency domain when being in the time domain the second symbol At least one of 12n+6,12n+7,12n+8 subcarriers of unit.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the first symbol in the time domain At least one of 12n+3,12n+4,12n+5 subcarriers；It include money on frequency domain when being in the time domain the second symbol At least one of 12n+9,12n+10,12n+11 subcarriers of source unit.

It include resource unit on frequency domain when the running time-frequency resource of third DMRS port group mapping is the first symbol in the time domain At least one of 12n+6,12n+7,12n+8 subcarriers；It include money on frequency domain when being in the time domain the second symbol At least one of 12n, 12n+1,12n+2 subcarriers of source unit.

It include resource unit on frequency domain when the running time-frequency resource of 4th DMRS port group mapping is the first symbol in the time domain At least one of 12n+9,12n+10,12n+11 subcarriers；When being in the time domain the second symbol, include on frequency domain At least one of 12n+3,12n+4,12n+5 subcarriers of resource unit.

It is a kind of schematic diagram of mapping ruler of 8 DMRS ports, wherein every kind of shade is small as shown in (b) in Figure 16 Grid indicates the RE, n=0 that a DMRS port group is mapped to.

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain At least one of 12n, 12n+4,12n+8 subcarriers；It include money on frequency domain when being in the time domain the second symbol At least one of 12n+2,12n+6,12n+10 subcarriers of source unit.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the first symbol in the time domain At least one of 12n+1,12n+5,12n+9 subcarriers；It include money on frequency domain when being in the time domain the second symbol At least one of 12n+3,12n+7,12n+11 subcarriers of source unit.

It include resource unit on frequency domain when the running time-frequency resource of third DMRS port group mapping is the first symbol in the time domain At least one of 12n+2,12n+6,12n+10 subcarriers；When being in the time domain the second symbol, include on frequency domain At least one of 12n, 12n+4,12n+8 subcarriers of resource unit.

It include resource unit on frequency domain when the running time-frequency resource of 4th DMRS port group mapping is the first symbol in the time domain At least one of 12n+3,12n+7,12n+11 subcarriers；When being in the time domain the second symbol, include on frequency domain At least one of 12n+1,12n+5,12n+9 subcarriers of resource unit.

It is a kind of schematic diagram of mapping ruler of 8 DMRS ports, wherein every kind of shade is small as shown in (c) in Figure 16 Grid indicates the RE, n=0 that a DMRS port group is mapped to.

The running time-frequency resource of 4th kind: first and second DMRS port group mapping includes the first symbol in the time domain, third and fourth The running time-frequency resource of DMRS port group mapping includes the second symbol in the time domain.And:

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain The 2n subcarrier.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the first symbol in the time domain The 2n+1 subcarrier.

It include resource unit on frequency domain when the running time-frequency resource of third DMRS port group mapping is the second symbol in the time domain The 2n subcarrier.

It include resource unit on frequency domain when the running time-frequency resource of 4th DMRS port group mapping is the second symbol in the time domain The 2n+1 subcarrier.

It is a kind of schematic diagram of mapping ruler of 8 DMRS ports, wherein every kind of shade is small as shown in (d) in Figure 16 Grid indicates the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5.In this scheme, each port is divided on frequency domain Cloth is uniform, and has higher density, can guarantee higher channel estimated accuracy in several scenes.In addition, the program is due to each Port is evenly distributed and mutually discrete on frequency domain, therefore the characteristic with low PAPR, can be suitable for multicarrier, single load simultaneously Wave is convenient for uplink and downlink, more waveform co-designs, is suitable for MU-MIMO scene, reduces system DMRS instruction expense and design is multiple Miscellaneous degree.The each port of the program is only mapped in can be used not by effect of phase noise in high frequency scene with 1 symbol.The party Case can also use distinct symbols number in different port, and port mapping position is fixed, and is had preferably flexibility, be ensure that performance With expense.Further, since uniform mapping of the port on frequency domain, is convenient for flexible dispatching.

2), 8 DMRS ports are divided into 2 DMRS port groups, and each DMRS port group includes 4 DMRS ports.2 DMRS Port set includes the first DMRS port group and the second DMRS port group.Each DMRS port in each DMRS port group is corresponding Identical running time-frequency resource is multiplexed by CDM mode between DMRS.The mapping ruler of this 2 DMRS port groups is as follows:

The first: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, and:

When the running time-frequency resource of second DMRS port group mapping is the first symbol and the second symbol in the time domain, on frequency domain At least one of 12n+2,12n+3,12n+6,12n+7,12n+10,12n+11 subcarriers including resource unit.

It is a kind of schematic diagram of mapping ruler of 8 DMRS ports, wherein every kind of shade is small as shown in (a) in Figure 17 Grid indicates the RE, n=0 that a DMRS port group is mapped to.In this scheme, each port be evenly distributed on time-frequency domain in 2 symbols have high density, can guarantee higher channel estimated accuracy in several scenes.Furthermore, it is possible to be suitable for overloading simultaneously Wave, uplink and downlink system DMRS instruction expense and design complexities.The each port of the program is only mapped on continuous RE, so that end Orthogonality is smaller by channel effect between mouth group inner port, guarantees precision of channel estimation.Further, since port is uniform on frequency domain Flexible dispatching is convenient in mapping.Vacant port set position can enhance with power or transmit data.

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain At least one of 12n, 12n+1,12n+4,12n+5,12n+8,12n+9 subcarriers；It is in the time domain the second symbol When, on frequency domain including resource unit 12n+2,12n+3,12n+6,12n+7,12n+10,12n+11 subcarriers in At least one.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the first symbol in the time domain At least one of 12n+2,12n+3,12n+6,12n+7,12n+10,12n+11 subcarriers；It is in the time domain second When symbol, in 12n, 12n+1,12n+4,12n+5,12n+8,12n+9 subcarriers on frequency domain including resource unit At least one.

It is a kind of schematic diagram of mapping ruler of 8 DMRS ports, wherein every kind of shade is small as shown in (b) in Figure 17 Grid indicates the RE, n=0 that a DMRS port group is mapped to.

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain The 2n subcarrier；When being in the time domain the second symbol, including the 2n+1 subcarrier of resource unit on frequency domain.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the first symbol in the time domain The 2n+1 subcarrier；When being in the time domain the second symbol, including the 2n subcarrier of resource unit on frequency domain.

It is a kind of schematic diagram of mapping ruler of 8 DMRS ports, wherein every kind of shade is small as shown in (c) in Figure 17 Grid indicates the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5.

The running time-frequency resource of 4th kind: first DMRS port group mapping includes the first symbol, the second DMRS port in the time domain The running time-frequency resource of group mapping includes the second symbol in the time domain.And:

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain N-th of subcarrier.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the second symbol in the time domain N-th of subcarrier.

It is a kind of schematic diagram of mapping ruler of 8 DMRS ports, wherein every kind of shade is small as shown in (d) in Figure 17 Grid indicates the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5,6,7,8,9,10,11.

3) identical running time-frequency resource, is multiplexed by CDM mode between the corresponding DMRS of 8 DMRS ports.In this case, can To regard this 8 DMRS ports as a DMRS port group.The mapping ruler of the DMRS port group is as follows:

The running time-frequency resource of DMRS port group mapping includes the first symbol and the second symbol in the time domain, includes on frequency domain N-th of subcarrier of resource unit.

It as shown in figure 18, is a kind of schematic diagram of mapping ruler of 8 DMRS ports, wherein every kind of shade lattice table Show the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5,6,7,8,9,10,11.

The sum for the DMRS port that system is supported is 12

One, the running time-frequency resource of 12 DMRS ports mapping includes the first symbol of resource unit in the time domain.

1), 12 DMRS ports are divided into 6 DMRS port groups, and each DMRS port group includes 2 DMRS ports.6 DMRS port group includes the first DMRS port group, the second DMRS port group, third DMRS port group, the 4th DMRS port group, the Five DMRS port groups and the 6th DMRS port group.Pass through between the corresponding DMRS of each DMRS port in each DMRS port group CDM mode is multiplexed identical running time-frequency resource.The mapping ruler of this 6 DMRS port groups is as follows:

The first:

The running time-frequency resource of first DMRS port group mapping includes 12n, 12n+1 subcarriers of resource unit on frequency domain At least one of.

12n+2,12n+3 sons of the running time-frequency resource of second DMRS port group mapping on frequency domain including resource unit carry At least one of wave.

12n+4,12n+5 sons of the running time-frequency resource of third DMRS port group mapping on frequency domain including resource unit carry At least one of wave.

12n+6,12n+7 sons of the running time-frequency resource of 4th DMRS port group mapping on frequency domain including resource unit carry At least one of wave.

12n+8,12n+9 sons of the running time-frequency resource of 5th DMRS port group mapping on frequency domain including resource unit carry At least one of wave.

12n+10,12n+11 sons of the running time-frequency resource of 6th DMRS port group mapping on frequency domain including resource unit At least one of carrier wave.

It is a kind of schematic diagram of mapping ruler of 8 DMRS ports, wherein every kind of shade is small as shown in (a) in Figure 19 Grid indicates the RE, n=0 that a DMRS port group is mapped to.

Second:

The running time-frequency resource of first DMRS port group mapping includes the 6n subcarrier of resource unit on frequency domain.

The running time-frequency resource of second DMRS port group mapping includes the 6n+1 subcarrier of resource unit on frequency domain.

The running time-frequency resource of third DMRS port group mapping includes the 6n+2 subcarrier of resource unit on frequency domain.

The running time-frequency resource of 4th DMRS port group mapping includes the 6n+3 subcarrier of resource unit on frequency domain.

The running time-frequency resource of 5th DMRS port group mapping includes the 6n+4 subcarrier of resource unit on frequency domain.

The running time-frequency resource of 6th DMRS port group mapping includes the 6n+5 subcarrier of resource unit on frequency domain.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (b) in Figure 19 Lattice indicates the RE, n=0,1 that a DMRS port group is mapped to.The program is distributed due to each port on frequency domain It is even and mutually discrete, therefore the characteristic with low PAPR, multicarrier, single carrier can be suitable for simultaneously, be convenient for uplink and downlink, more waves Shape co-design is suitable for MU-MIMO scene, reduces system DMRS instruction expense and design complexities.The program only takes up 1 A symbol, overhead is low, and can be used in high frequency scene.The program can also be supported more by way of increasing symbol Port, have preferably flexibility.Further, since uniform mapping of the port on frequency domain, is convenient for flexible dispatching.Vacant port Group position can enhance with power or transmit data.In addition, program port mapping position is fixed, different port is used Same pilot figure reduces system and indicates expense.

2), 12 DMRS ports are divided into 4 DMRS port groups, and each DMRS port group includes 3 DMRS ports.4 DMRS port group includes the first DMRS port group, the second DMRS port group, third DMRS port group and the 4th DMRS port group.Often Identical running time-frequency resource is multiplexed by CDM mode between the corresponding DMRS of each DMRS port in a DMRS port group.This 4 The mapping ruler of DMRS port group is as follows:

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (a) in Figure 20 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

3), 12 DMRS ports are divided into 3 DMRS port groups, and each DMRS port group includes 4 DMRS ports.3 DMRS port group includes the first DMRS port group, the second DMRS port group and third DMRS port group.In each DMRS port group The corresponding DMRS of each DMRS port between identical running time-frequency resource is multiplexed by CDM mode.The mapping of this 3 DMRS port groups Rule is as follows:

The running time-frequency resource of first DMRS port group mapping on frequency domain including 12n, 12n+1 of resource unit, 12n+2, At least one of 12n+3 subcarrier.

The running time-frequency resource of second DMRS port group mapping includes 12n+4,12n+5,12n+ of resource unit on frequency domain 6, at least one of 12n+7 subcarrier.

The running time-frequency resource of third DMRS port group mapping includes 12n+8,12n+9,12n+ of resource unit on frequency domain 10, at least one of 12n+11 subcarrier.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (b) in Figure 20 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

4), 12 DMRS ports are divided into 2 DMRS port groups, and each DMRS port group includes 6 DMRS ports.2 DMRS port group includes the first DMRS port group and the second DMRS port group.Each DMRS port in each DMRS port group is corresponding DMRS between identical running time-frequency resource is multiplexed by CDM mode.The mapping ruler of this 2 DMRS port groups is as follows:

The first:

The running time-frequency resource of first DMRS port group mapping on frequency domain including 12n, 12n+1 of resource unit, 12n+2, At least one of 12n+3,12n+4,12n+5 subcarriers.

The running time-frequency resource of second DMRS port group mapping includes 12n+6,12n+7,12n+ of resource unit on frequency domain 8, at least one of 12n+9,12n+10,12n+11 subcarriers.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (a) in Figure 21 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

Second:

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (b) in Figure 21 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

The third:

The running time-frequency resource of first DMRS port group mapping on frequency domain including 12n, 12n+1 of resource unit, 12n+4, At least one of 12n+5,12n+8,12n+9 subcarriers.

The running time-frequency resource of second DMRS port group mapping includes 12n+2,12n+3,12n+ of resource unit on frequency domain 6, at least one of 12n+7,12n+10,12n+11 subcarriers.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (c) in Figure 21 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

4th kind:

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (d) in Figure 21 Lattice indicates the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5.In this scheme, each port is on frequency domain It is evenly distributed, and there is high density, can guarantee higher channel estimated accuracy in several scenes.In addition, the program is due to each Port is evenly distributed and mutually discrete on frequency domain, therefore the characteristic with low PAPR, can be suitable for multicarrier, single load simultaneously Wave is convenient for uplink and downlink, more waveform co-designs, is suitable for MU-MIMO scene, reduces system DMRS instruction expense and design is multiple Miscellaneous degree.The program only takes up 1 symbol, and overhead is low, and can be used in high frequency scene.Further, since port is in frequency domain On uniform mapping, be convenient for flexible dispatching.Vacant port set position can enhance with power or transmit data.Port mapping position Fixation is set, same pilot figure is used for different port, system is reduced and indicates expense.

4) identical running time-frequency resource, is multiplexed by CDM mode between the corresponding DMRS of 12 DMRS ports.In this case, This 12 DMRS ports can be regarded as a DMRS port group.The mapping ruler of the DMRS port group is as follows:

It as shown in figure 22, is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade lattice table Show the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5,6,7,8,9,10,11.

Two, the running time-frequency resource of 12 DMRS ports includes the first symbol and the second symbol of resource unit on frequency domain.

The first: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, also, each The running time-frequency resource of DMRS port group mapping can refer to scheme corresponding to (a) in Figure 19 in frequency domain.One kind in this case is shown Such as shown in (a) in Figure 23.

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain At least one of 12n, 12n+1 subcarriers；When being in the time domain the second symbol, including resource unit on frequency domain At least one of 12n+6,12n+7 subcarriers.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the first symbol in the time domain At least one of 12n+2,12n+3 subcarriers；It include resource unit on frequency domain when being in the time domain the second symbol At least one of 12n+8,12n+9 subcarriers.

It include resource unit on frequency domain when the running time-frequency resource of third DMRS port group mapping is the first symbol in the time domain At least one of 12n+4,12n+5 subcarriers；It include resource unit on frequency domain when being in the time domain the second symbol At least one of 12n+10,12n+11 subcarriers.

It include resource unit on frequency domain when the running time-frequency resource of 4th DMRS port group mapping is the first symbol in the time domain At least one of 12n+6,12n+7 subcarriers；It include resource unit on frequency domain when being in the time domain the second symbol At least one of 12n, 12n+1 subcarriers.

It include resource unit on frequency domain when the running time-frequency resource of 5th DMRS port group mapping is the first symbol in the time domain At least one of 12n+8,12n+9 subcarriers；It include resource unit on frequency domain when being in the time domain the second symbol At least one of 12n+2,12n+3 subcarriers.

It include resource unit on frequency domain when the running time-frequency resource of 6th DMRS port group mapping is the first symbol in the time domain At least one of 12n+10,12n+11 subcarriers；It include resource list on frequency domain when being in the time domain the second symbol At least one of 12n+4,12n+5 subcarriers of member.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (b) in Figure 23 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain The 6n subcarrier；When being in the time domain the second symbol, including the 6n+3 subcarrier of resource unit on frequency domain.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the first symbol in the time domain The 6n+1 subcarrier；When being in the time domain the second symbol, including the 6n+4 subcarrier of resource unit on frequency domain.

It include resource unit on frequency domain when the running time-frequency resource of third DMRS port group mapping is the first symbol in the time domain The 6n+2 subcarrier；When being in the time domain the second symbol, including the 6n+5 subcarrier of resource unit on frequency domain.

It include resource unit on frequency domain when the running time-frequency resource of 4th DMRS port group mapping is the first symbol in the time domain The 6n+3 subcarrier；When being in the time domain the second symbol, including the 6n subcarrier of resource unit on frequency domain.

It include resource unit on frequency domain when the running time-frequency resource of 5th DMRS port group mapping is the first symbol in the time domain The 6n+4 subcarrier；When being in the time domain the second symbol, including the 6n+1 subcarrier of resource unit on frequency domain.

It include resource unit on frequency domain when the running time-frequency resource of 6th DMRS port group mapping is the first symbol in the time domain The 6n+5 subcarrier；When being in the time domain the second symbol, including the 6n+2 subcarrier of resource unit on frequency domain.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (c) in Figure 23 Lattice indicates the RE, n=0,1 that a DMRS port group is mapped to.

The running time-frequency resource of 4th kind: first, second and third DMRS port group mapping includes the first symbol in the time domain, the 4th, Five, the running time-frequency resource of six DMRS port groups mapping includes the second symbol in the time domain.And:

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain The 3n subcarrier.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the first symbol in the time domain The 3n+1 subcarrier.

It include resource unit on frequency domain when the running time-frequency resource of third DMRS port group mapping is the first symbol in the time domain The 3n+2 subcarrier.

It include resource unit on frequency domain when the running time-frequency resource of 4th DMRS port group mapping is the second symbol in the time domain The 3n subcarrier.

It include resource unit on frequency domain when the running time-frequency resource of 5th DMRS port group mapping is the second symbol in the time domain The 3n+1 subcarrier.

It include resource unit on frequency domain when the running time-frequency resource of 6th DMRS port group mapping is the second symbol in the time domain The 3n+2 subcarrier.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (d) in Figure 23 Lattice indicates the RE that a DMRS port group is mapped to, n=0,1,2,3.In this scheme, each port is distributed on frequency domain Uniformly, and there is higher density, can guarantees higher channel estimated accuracy in several scenes.In addition, the program is due to each end Mouth is evenly distributed and mutually discrete on frequency domain, therefore the characteristic with low PAPR, can be suitable for multicarrier, single load simultaneously Wave is convenient for uplink and downlink, more waveform co-designs, is suitable for MU-MIMO scene, reduces system DMRS instruction expense and design is multiple Miscellaneous degree.The each port of the program is only mapped in can be used not by effect of phase noise in high frequency scene with 1 symbol.The party Case can also in different port number dynamic configuration symbol numbers, have preferably flexibility, ensure that performance and expense.This Outside, the uniform mapping due to port on frequency domain is convenient for flexible dispatching.

The first: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, also, each The running time-frequency resource of DMRS port group mapping can refer to scheme corresponding to (a) in Figure 20 on frequency domain.One kind in this case Shown in (a) in example such as Figure 24.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (b) in Figure 24 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

When the running time-frequency resource of first DMRS port group mapping is the first symbol and the second symbol in the time domain, on frequency domain The 4n subcarrier including resource unit.

When the running time-frequency resource of second DMRS port group mapping is the first symbol and the second symbol in the time domain, on frequency domain The 4n+1 subcarrier including resource unit.

When the running time-frequency resource of third DMRS port group mapping is the first symbol and the second symbol in the time domain, on frequency domain The 4n+2 subcarrier including resource unit.

When the running time-frequency resource of 4th DMRS port group mapping is the first symbol and the second symbol in the time domain, on frequency domain The 4n+3 subcarrier including resource unit.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (c) in Figure 24 Lattice indicates the RE that a DMRS port group is mapped to, n=0,1,2.In this scheme, each port is distributed on frequency domain It is even, and it is distributed in two symbols simultaneously, there is high density, can guarantee higher channel estimated accuracy in several scenes.In addition, should Scheme due to each port be evenly distributed on frequency domain and mutually it is discrete, with low PAPR characteristic, can be applicable in simultaneously In multicarrier, single carrier, it is convenient for uplink and downlink, more waveform co-designs, is suitable for MU-MIMO scene, the system DMRS of reducing refers to Show expense and design complexities.In addition, each port mapping position is fixed, supported under the premise of not changing original port mapping The transmission of flexible port has preferably universal, reduction system instruction expense.Further, since port is uniform on frequency domain Flexible dispatching is convenient in mapping.Vacant port set position can enhance with power or transmit data.In addition, in each port set CDM length is small, and orthogonality is more preferably guaranteed between port.

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain The 4n subcarrier；When being in the time domain the second symbol, including the 4n+2 subcarrier of resource unit on frequency domain.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the first symbol in the time domain The 4n+1 subcarrier；When being in the time domain the second symbol, including the 4n+3 subcarrier of resource unit on frequency domain.

It include resource unit on frequency domain when the running time-frequency resource of third DMRS port group mapping is the first symbol in the time domain The 4n+2 subcarrier；When being in the time domain the second symbol, including the 4n subcarrier of resource unit on frequency domain.

It include resource unit on frequency domain when the running time-frequency resource of 4th DMRS port group mapping is the first symbol in the time domain The 4n+3 subcarrier；When being in the time domain the second symbol, including the 4n+1 subcarrier of resource unit on frequency domain.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (d) in Figure 24 Lattice indicates the RE that a DMRS port group is mapped to, n=0,1,2.

The running time-frequency resource of 5th kind: first and second DMRS port group mapping includes the first symbol in the time domain, third and fourth The running time-frequency resource of DMRS port group mapping includes the second symbol in the time domain.And:

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain At least one of 12n, 12n+1,12n+2,12n+6,12n+7,12n+8 subcarriers.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the first symbol in the time domain At least one of 12n+3,12n+4,12n+5,12n+9,12n+10,12n+11 subcarriers.

It include resource unit on frequency domain when the running time-frequency resource of third DMRS port group mapping is the second symbol in the time domain At least one of 12n, 12n+1,12n+2,12n+6,12n+7,12n+8 subcarriers.

It include resource unit on frequency domain when the running time-frequency resource of 4th DMRS port group mapping is the second symbol in the time domain At least one of 12n+3,12n+4,12n+5,12n+9,12n+10,12n+11 subcarriers.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (e) in Figure 24 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

When the running time-frequency resource of first DMRS port group mapping is the first symbol and the second symbol in the time domain, on frequency domain At least one of 12n, 12n+1,12n+2,12n+3 subcarriers including resource unit.

When the running time-frequency resource of second DMRS port group mapping is the first symbol and the second symbol in the time domain, on frequency domain At least one of 12n+4,12n+5,12n+6,12n+7 subcarriers including resource unit.

When the running time-frequency resource of third DMRS port group mapping is the first symbol and the second symbol in the time domain, on frequency domain At least one of 12n+8,12n+9,12n+10,12n+11 subcarriers including resource unit.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (a) in Figure 25 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain 12n, 12n+1,12n+2,12n+3 subcarriers；When being in the time domain the second symbol, including resource unit on frequency domain At least one of 12n+8,12n+9,12n+10,12n+11 subcarriers.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the first symbol in the time domain 12n+4,12n+5,12n+6,12n+7 subcarriers；It include resource unit on frequency domain when being in the time domain the second symbol At least one of 12n, 12n+1,12n+2,12n+3 subcarriers.

It include resource unit on frequency domain when the running time-frequency resource of third DMRS port group mapping is the first symbol in the time domain At least one of 12n+8,12n+9,12n+10,12n+11 subcarriers；When being in the time domain the second symbol, in frequency domain Upper at least one of 12n+4,12n+5,12n+6,12n+7 subcarriers including resource unit.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (b) in Figure 25 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain At least one of 12n, 12n+1,12n+2,12n+3 subcarriers；When being in the time domain the second symbol, wrapped on frequency domain Include at least one of 12n+4,12n+5,12n+6,12n+7 subcarriers of resource unit.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the first symbol in the time domain At least one of 12n+4,12n+5,12n+6,12n+7 subcarriers；When being in the time domain the second symbol, on frequency domain At least one of 12n+8,12n+9,12n+10,12n+11 subcarriers including resource unit.

It include resource unit on frequency domain when the running time-frequency resource of third DMRS port group mapping is the first symbol in the time domain At least one of 12n+8,12n+9,12n+10,12n+11 subcarriers；When being in the time domain the second symbol, in frequency domain Upper at least one of 12n, 12n+1,12n+2,12n+3 subcarriers including resource unit.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (c) in Figure 25 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

When the running time-frequency resource of first DMRS port group mapping is the first symbol and the second symbol in the time domain, on frequency domain The 3n subcarrier including including resource unit.

When the running time-frequency resource of second DMRS port group mapping is the first symbol and the second symbol in the time domain, on frequency domain The 3n+1 subcarrier including including resource unit.

When the running time-frequency resource of third DMRS port group mapping is the first symbol and the second symbol in the time domain, on frequency domain The 3n+2 subcarrier including including resource unit.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (d) in Figure 25 Lattice indicates the RE that a DMRS port group is mapped to, n=0,1,2,3.In this scheme, each port is distributed on frequency domain Uniformly, and simultaneously two symbols are distributed in, there is more high density, can guarantee higher channel estimated accuracy in several scenes.This Outside, the program due to each port be evenly distributed on frequency domain and mutually it is discrete, with low PAPR characteristic, can be simultaneously Suitable for multicarrier, single carrier, it is convenient for uplink and downlink, more waveform co-designs, is suitable for MU-MIMO scene, reduces system DMRS indicates expense and design complexities.In addition, each port mapping position is fixed in the program, have it is preferably universal, Reduction system indicates expense.In addition, in the program, uniform mapping of the port on frequency domain is convenient for flexible dispatching, and vacant port Group position can enhance with power or transmit data.

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain The 3n subcarrier；When being in the time domain the second symbol, including the 3n+2 of resource unit on frequency domain.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the first symbol in the time domain The 3n+1 subcarrier；When being in the time domain the second symbol, including the 3n of resource unit on frequency domain.

It include resource unit on frequency domain when the running time-frequency resource of third DMRS port group mapping is the first symbol in the time domain The 3n+2 subcarrier；When being in the time domain the second symbol, including the 3n+1 of resource unit on frequency domain.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (e) in Figure 25 Lattice indicates the RE that a DMRS port group is mapped to, n=0,1,2,3.

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain The 3n subcarrier；When being in the time domain the second symbol, including the 3n+1 of resource unit on frequency domain.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the first symbol in the time domain The 3n+1 subcarrier；When being in the time domain the second symbol, including the 3n+2 of resource unit on frequency domain.

It include resource unit on frequency domain when the running time-frequency resource of third DMRS port group mapping is the first symbol in the time domain The 3n+2 subcarrier；When being in the time domain the second symbol, including the 3n of resource unit on frequency domain.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (f) in Figure 25 Lattice indicates the RE that a DMRS port group is mapped to, n=0,1,2,3.

7th kind: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, and:

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain At least one of 12n, 12n+1,12n+6,12n+7 subcarriers；When being in the time domain the second symbol, wrapped on frequency domain Include at least one of 12n+4,12n+5,12n+10,12n+11 subcarriers of resource unit.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the first symbol in the time domain At least one of 12n+2,12n+3,12n+8,12n+9 subcarriers；When being in the time domain the second symbol, on frequency domain At least one of 12n, 12n+1,12n+6,12n+7 subcarriers including resource unit.

It include resource unit on frequency domain when the running time-frequency resource of third DMRS port group mapping is the first symbol in the time domain At least one of 12n+4,12n+5,12n+10,12n+11 subcarriers；When being in the time domain the second symbol, in frequency domain Upper at least one of 12n+2,12n+3,12n+8,12n+9 subcarriers including resource unit.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (g) in Figure 25 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

The first: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, also, each The running time-frequency resource of DMRS port group mapping can refer to scheme corresponding to (a) in Figure 21 on frequency domain.One kind in this case Shown in (a) in example such as Figure 26.

Second: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, also, each The running time-frequency resource of DMRS port group mapping can refer to scheme corresponding to (b) in Figure 21 on frequency domain.One kind in this case Shown in (b) in example such as Figure 26.

The third: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, also, each The running time-frequency resource of DMRS port group mapping can refer to scheme corresponding to (c) in Figure 21 on frequency domain.One kind in this case Shown in (c) in example such as Figure 26.

4th kind: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, also, each The running time-frequency resource of DMRS port group mapping can refer to scheme corresponding to (d) in Figure 21 on frequency domain.One kind in this case Shown in (d) in example such as Figure 26.

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain At least one of 12n, 12n+1,12n+2,12n+3,12n+4,12n+5 subcarriers；It is in the time domain the second symbol When, on frequency domain including resource unit 12n+6,12n+7,12n+8,12n+9,12n+10,12n+11 subcarriers in At least one.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the first symbol in the time domain At least one of 12n+6,12n+7,12n+8,12n+9,12n+10,12n+11 subcarriers；It is in the time domain second When symbol, in 12n, 12n+1,12n+2,12n+3,12n+4,12n+5 subcarriers on frequency domain including resource unit At least one.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (a) in Figure 27 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

It include resource unit on frequency domain when the running time-frequency resource of first DMRS port group mapping is the first symbol in the time domain At least one of 12n, 12n+1,12n+2,12n+6,12n+7,12n+8 subcarriers；It is in the time domain the second symbol When, on frequency domain including resource unit 12n+3,12n+4,12n+5,12n+9,12n+10,12n+11 subcarriers in At least one.

It include resource unit on frequency domain when the running time-frequency resource of second DMRS port group mapping is the first symbol in the time domain At least one of 12n+3,12n+4,12n+5,12n+9,12n+10,12n+11 subcarriers；It is in the time domain second When symbol, in 12n, 12n+1,12n+2,12n+6,12n+7,12n+8 subcarriers on frequency domain including resource unit At least one.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (b) in Figure 27 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (c) in Figure 27 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

8th kind: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, and:

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (d) in Figure 27 Lattice indicates the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5.

The running time-frequency resource of 9th kind: first DMRS port group mapping includes the first symbol, the second DMRS port in the time domain The running time-frequency resource of group mapping includes the second symbol in the time domain.And:

The running time-frequency resource of first DMRS port group mapping is when being the first symbol in the time domain, is the of resource unit on frequency domain 2n subcarrier.

The running time-frequency resource of second DMRS port group mapping is when being the second symbol in the time domain, is the of resource unit on frequency domain 2n subcarrier.

It is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade as shown in (e) in Figure 27 Lattice indicates the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5.Each blank lattice indicate not by Map the RE of DMRS port.

When the running time-frequency resource of DMRS port group mapping is the first symbol and the second symbol in the time domain, wrapped on frequency domain Include n-th of subcarrier of resource unit.

It as shown in figure 28, is a kind of schematic diagram of mapping ruler of 12 DMRS ports, wherein every kind of shade lattice table Show the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5,6,7,8,9,10,11.

The sum for the DMRS port that system is supported is 16

One, the running time-frequency resource of 16 DMRS ports includes the first symbol of resource unit on frequency domain.

1), 16 DMRS ports are divided into 4 DMRS port groups, and each DMRS port group includes 4 DMRS ports.4 DMRS port group includes the first DMRS port group, the second DMRS port group, third DMRS port group and the 4th DMRS port group.Often Identical running time-frequency resource is multiplexed by CDM mode between the corresponding DMRS of each DMRS port in a DMRS port group.This 4 The mapping ruler of DMRS port group is as follows:

The first:

It is a kind of schematic diagram of mapping ruler of 16 DMRS ports, wherein every kind of shade as shown in (a) in Figure 29 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

Second:

The running time-frequency resource of first DMRS port group mapping includes the 4n subcarrier of resource unit on frequency domain.

The running time-frequency resource of second DMRS port group mapping includes the 4n+1 subcarrier of resource unit on frequency domain.

The running time-frequency resource of third DMRS port group mapping includes the 4n+2 subcarrier of resource unit on frequency domain.

The running time-frequency resource of 4th DMRS port group mapping includes the 4n+3 subcarrier of resource unit on frequency domain.

It is a kind of schematic diagram of mapping ruler of 16 DMRS ports, wherein every kind of shade as shown in (b) in Figure 29 Lattice indicates the RE that a DMRS port group is mapped to, n=0,1,2.

2), 16 DMRS ports are divided into 2 DMRS port groups, and each DMRS port group includes 8 DMRS ports.2 DMRS port group includes the first DMRS port group and the second DMRS port group.Each DMRS port in each DMRS port group is corresponding DMRS between identical running time-frequency resource is multiplexed by CDM mode.The mapping ruler of this 2 DMRS port groups is as follows:

The first:

It is a kind of schematic diagram of mapping ruler of 16 DMRS ports, wherein every kind of shade as shown in (a) in Figure 30 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

Second:

It is a kind of schematic diagram of mapping ruler of 16 DMRS ports, wherein every kind of shade as shown in (b) in Figure 30 Lattice indicates the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5.

3) identical running time-frequency resource, is multiplexed by CDM mode between the corresponding DMRS of 16 DMRS ports.In this case, This 16 DMRS ports can be regarded as a DMRS port group.The mapping ruler of the DMRS port group is as follows:

The DMRS port group mapping running time-frequency resource 6 on frequency domain include resource unit n-th of subcarrier.

It as shown in figure 31, is a kind of schematic diagram of mapping ruler of 16 DMRS ports, wherein every kind of shade lattice table Show the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5,6,7,8,9,10,11.

Two, the running time-frequency resource of 16 DMRS ports includes the first symbol and the second symbol of resource unit on frequency domain.

The first: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, also, each The running time-frequency resource of DMRS port group can refer to scheme corresponding to (a) in Figure 29 on frequency domain.A kind of example in this case As shown in (a) in Figure 32.

Second: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, also, each The running time-frequency resource of DMRS port group can refer to scheme corresponding to (b) in Figure 29 on frequency domain.A kind of example in this case As shown in (b) in Figure 32.In this scheme, each port is evenly distributed on frequency domain, and is distributed in two symbols simultaneously, has More high density can guarantee higher channel estimated accuracy in several scenes.In addition, the program is divided on frequency domain due to each port Cloth is uniformly and mutually discrete, therefore the characteristic with low PAPR, can be suitable for multicarrier, single carrier simultaneously, can be realized Downlink, more waveform co-designs are suitable for MU-MIMO scene, reduce system DMRS instruction expense and design complexities.This Outside, in the program, each port mapping position is fixed, and has preferably universal, reduction system instruction expense.In the program, Uniform mapping of the port on frequency domain is convenient for flexible dispatching, and vacant port set position can enhance with power or transmit number According to.

It is a kind of schematic diagram of mapping ruler of 16 DMRS ports, wherein every kind of shade as shown in (c) in Figure 32 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

The running time-frequency resource of first DMRS port group mapping is when being the first symbol in the time domain, is the of resource unit on frequency domain At least one of 12n, 12n+1,12n+2,12n+6,12n+7,12n+8 subcarriers.

The running time-frequency resource of second DMRS port group mapping is when being the first symbol in the time domain, is the of resource unit on frequency domain At least one of 12n+3,12n+4,12n+5,12n+9,12n+10,12n+11 subcarriers.

The running time-frequency resource of third DMRS port group mapping is when being the second symbol in the time domain, is the of resource unit on frequency domain At least one of 12n, 12n+1,12n+2,12n+6,12n+7,12n+8 subcarriers.

The running time-frequency resource of 4th DMRS port group mapping is when being the second symbol in the time domain, is the of resource unit on frequency domain At least one of 12n+3,12n+4,12n+5,12n+9,12n+10,12n+11 subcarriers.

It is a kind of schematic diagram of mapping ruler of 16 DMRS ports, wherein every kind of shade as shown in (d) in Figure 32 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

The running time-frequency resource of first DMRS port group mapping is when being the first symbol in the time domain, is the of resource unit on frequency domain At least one of 12n, 12n+1,12n+4,12n+5,12n+8,12n+9 subcarriers.

The running time-frequency resource of second DMRS port group mapping is when being the first symbol in the time domain, is the of resource unit on frequency domain At least one of 12n+2,12n+3,12n+6,12n+7,12n+10,12n+11 subcarriers.

The running time-frequency resource of third DMRS port group mapping is when being the second symbol in the time domain, is the of resource unit on frequency domain At least one of 12n, 12n+1,12n+4,12n+5,12n+8,12n+9 subcarriers.

The running time-frequency resource of 4th DMRS port group mapping is when being the second symbol in the time domain, is the of resource unit on frequency domain At least one of 12n+2,12n+3,12n+6,12n+7,12n+10,12n+11 subcarriers.

It is a kind of schematic diagram of mapping ruler of 16 DMRS ports, wherein every kind of shade as shown in (e) in Figure 32 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

It is a kind of schematic diagram of mapping ruler of 16 DMRS ports, wherein every kind of shade as shown in (f) in Figure 32 Lattice indicates the RE that a DMRS port group is mapped to, n=0,1,2.

The first: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, also, each The running time-frequency resource of DMRS port group can refer to scheme corresponding to (a) in Figure 30 on frequency domain.A kind of example in this case As shown in (a) in Figure 33.

Second: the running time-frequency resource of each DMRS port group mapping includes the first symbol and the second symbol, also, each The running time-frequency resource of DMRS port group can refer to scheme corresponding to (b) in Figure 30 on frequency domain.A kind of example in this case As shown in (b) in Figure 33.In this scheme, each port is evenly distributed on frequency domain, and is distributed in two symbols simultaneously, has High density can guarantee higher channel estimated accuracy in several scenes.In addition, the program is distributed on frequency domain due to each port It is uniformly and mutually discrete, therefore the characteristic with low PAPR, can be suitable for multicarrier, single carrier simultaneously, be convenient for uplink and downlink, more Waveform co-design is suitable for MU-MIMO scene, reduces system DMRS instruction expense and design complexities.In addition, the program In, each port mapping position is fixed, and has preferably universal, reduction system instruction expense.In the program, port is in frequency domain On uniform mapping, be convenient for flexible dispatching, and vacant port set position can with power enhance or transmit data.

It is a kind of schematic diagram of mapping ruler of 16 DMRS ports, wherein every kind of shade as shown in (c) in Figure 33 Lattice indicates the RE, n=0 that a DMRS port group is mapped to.

It is a kind of schematic diagram of mapping ruler of 16 DMRS ports, wherein every kind of shade as shown in (d) in Figure 33 Lattice indicates the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5.

It as shown in figure 34, is a kind of schematic diagram of mapping ruler of 16 DMRS ports, wherein every kind of shade lattice table Show the RE that a DMRS port group is mapped to, n=0,1,2,3,4,5,6,7,8,9,10,11.

It is above-mentioned that mainly scheme provided by the embodiments of the present application is described from the angle of interaction between each network element.It can With understanding, each network element, such as base station or terminal.In order to realize the above functions, it comprises execute each function phase The hardware configuration and/or software module answered.Those skilled in the art should be readily appreciated that, in conjunction with reality disclosed herein Each exemplary unit and algorithm steps of example description are applied, the application can be with the combining form of hardware or hardware and computer software To realize.Some functions is executed in a manner of hardware or computer software driving hardware actually, depending on technical solution Specific application and design constraint.Professional technician can to each specific application come using distinct methods to realize The function of description, but this realization is it is not considered that exceed scope of the present application.

The embodiment of the present application can carry out the division of functional module, example according to above method example to base station or terminal Such as, each functional module of each function division can be corresponded to, two or more functions can also be integrated at one It manages in module.Above-mentioned integrated module both can take the form of hardware realization, can also use the form of software function module It realizes.It should be noted that being schematical, only a kind of logic function stroke to the division of module in the embodiment of the present application Point, there may be another division manner in actual implementation.Below for using corresponding each each functional module of function division It is illustrated:

Figure 35 shows a kind of structural schematic diagram of device 350 for sending DMRS.The device 350 can be above involved in Base station 100 or terminal 200.The device 350 can include determining that unit 3501 and transmission unit 3502.Wherein it is determined that unit 3501 can be used for executing Fig. 6, and/or other processes for supporting techniques described herein.Transmission unit 3502 can be with For executing the movement that transmitting terminal executes in the S102 in Fig. 6, and/or other mistakes for supporting techniques described herein Journey.The function that all related contents for each step that above method embodiment is related to can quote corresponding function module is retouched It states, details are not described herein.

Figure 36 shows a kind of structural schematic diagram of device 360 for obtaining DMRS.The device 360 can include determining that unit 3601, acquiring unit 3602 and receiving unit 3603.Wherein: the device 360 can be above involved in terminal 200 or base station 100.Determination unit 3601 can be used for executing the S103 in Fig. 6, and/or other mistakes for supporting techniques described herein Journey.Acquiring unit 3602 can be used for executing the S104 in Fig. 6, and/or other mistakes for supporting techniques described herein Journey.Receiving unit 3603 is used to execute movement performed by receiving end in the S102 in Fig. 6.Above method embodiment is related to each All related contents of step can quote the function description of corresponding function module, and details are not described herein.It is exemplary, having During body is realized, it can be understood as, device 360 first passes through such as, but not limited to Fourier inversion (inverse fourier Transform, IFFT) it obtains the symbol carried on each RE and (such as obtains the symbol carried on each subcarrier of each OFDM symbol Number), then, according to the running time-frequency resource where DMRS, DMRS is obtained from the symbol of acquisition.

Figure 37 shows a kind of structural schematic diagram of instruction device.The device 370 can be above involved in base station 100.The device 370 may include generation unit 3701 and transmission unit 3702.Wherein, generation unit 3701 can be used for executing S201 in Fig. 6 a, and/or other processes for supporting techniques described herein.Transmission unit 3702 can be used for executing The movement that base station executes in S202 in Fig. 6 a, and/or other processes for supporting techniques described herein.The above method All related contents for each step that embodiment is related to can quote the function description of corresponding function module, no longer superfluous herein It states.

Figure 38 shows a kind of 380 structural schematic diagram of determining running time-frequency resource.The device 380 may include receiving unit 3801 and determination unit 3802.Wherein: the device 380 can be above involved in base station 100.Receiving unit 3801 is for holding Movement performed by receiving end in S202 in row Fig. 6 a, and/or other processes for supporting techniques described herein.Really Order member 3802 can be used for executing the S203 in Fig. 6 a, and/or other processes for supporting techniques described herein.On All related contents for stating each step that embodiment of the method is related to can quote the function description of corresponding function module, herein It repeats no more.

In the embodiment of the present application, the form of the corresponding each each functional module of function division of 350~device of device 380 is come It presents, or should be presented in the form of using the integrated each functional module of model split.Here " module " can refer to specific Application integrated circuit (application-specific integrated circuit, ASIC) executes one or more softwares Or the processor and memory of firmware program, integrated logic circuit and/or other device of above-mentioned function can be provided, wherein Processor and memory can integrate together, can also be relatively independent.

In a simple embodiment, be contemplated that will be in 350~device of device 380 by those skilled in the art Any one is realized by structure as shown in figure 39.

As shown in figure 39, device 390 may include: memory 3901, processor 3902 and communication interface 3903.Its Middle memory 3902 is for storing computer executed instructions, and when device 390 is run, processor 3901 executes memory 3902 and deposits The computer executed instructions of storage, so that device 390 executes information transferring method provided by the embodiments of the present application.Specific information passes Transmission method can refer to the associated description in above and attached drawing, and details are not described herein again.Wherein, communication interface 3903 can be transmitting-receiving Device.

Optionally, device 390 can be field programmable gate array (field-programmable gate array, FPGA), special integrated chip (application specific integrated circuit, ASIC), System on Chip/SoC (system on chip, SoC), central processing unit (central processor unit, CPU), network processing unit (network processor, NP), digital signal processing circuit (digital signal processor, DSP), microcontroller Device (micro controller unit, MCU) can also use programmable controller (programmable logic Device, PLD) or other integrated chips.

The embodiment of the present application also provides a kind of storage medium, which may include memory 3902.

Since information carrying means provided by the embodiments of the present application can be used for executing above- mentioned information transmission method, institute Obtainable technical effect can refer to above method embodiment, and details are not described herein for the embodiment of the present application.

In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real It is existing.When being realized using software program, can entirely or partly realize in the form of a computer program product.The computer Program product includes one or more computer instructions.On computers load and execute computer program instructions when, all or It partly generates according to process or function described in the embodiment of the present application.The computer can be general purpose computer, dedicated meter Calculation machine, computer network or other programmable devices.The computer instruction can store in computer readable storage medium In, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the computer Instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center Word user line (digital subscriber line, DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another A web-site, computer, server or data center are transmitted.The computer readable storage medium can be computer Any usable medium that can be accessed either includes the numbers such as one or more server, data centers that medium can be used to integrate According to storage equipment.The usable medium can be magnetic medium (for example, floppy disk, hard disk, tape), optical medium (for example, DVD), Or semiconductor medium (such as solid state hard disk (solid state disk, SSD)) etc..

Although the application is described in conjunction with each embodiment herein, however, implementing the application claimed In the process, those skilled in the art are by checking the attached drawing, disclosure and the appended claims, it will be appreciated that and it is real Other variations of the existing open embodiment.In the claims, " comprising " (comprising) word is not excluded for other compositions Part or step, "a" or "an" are not excluded for multiple situations.Claim may be implemented in single processor or other units In several functions enumerating.Mutually different has been recited in mutually different dependent certain measures, it is not intended that these are arranged It applies to combine and generates good effect.

Although the application is described in conjunction with specific features and embodiment, it is clear that, do not departing from this Shen In the case where spirit and scope please, it can be carry out various modifications and is combined.Correspondingly, the specification and drawings are only institute The exemplary illustration for the application that attached claim is defined, and be considered as covered within the scope of the application any and all and repair Change, change, combining or equivalent.Obviously, those skilled in the art the application can be carried out various modification and variations without It is detached from spirit and scope.If in this way, these modifications and variations of the application belong to the claim of this application and its Within the scope of equivalent technologies, then the application is also intended to include these modifications and variations.

Claims

1. a kind of method for sending demodulated reference signal DMRS characterized by comprising

Determine the running time-frequency resource for carrying DMRS, wherein

The DMRS is carried at least one resource unit, if the sum for the DMRS port that system is supported is 6, and this 6 DMRS port is divided into 3 DMRS port groups, and each DMRS port group includes 2 DMRS ports, and 3 DMRS port groups include First DMRS port group, the second DMRS port group and third DMRS port group, wherein the DMRS port in each DMRS port group It is multiplexed identical running time-frequency resource by CDM mode, in each resource unit, the running time-frequency resource packet of the first DMRS port group mapping Include 12n, 12n+1,12n+6,12n+7 subcarriers on the first symbol in time domain；Second DMRS port group mapping when Frequency resource includes 12n+2,12n+3,12n+8,12n+9 subcarriers on the first symbol in time domain；Third DMRS port The running time-frequency resource of group mapping includes 12n+4,12n+5,12n+10,12n+11 subcarriers on the first symbol in time domain, Wherein n is more than or equal to 0, and is less thanAny one or more integers, wherein M be each resource unit on frequency domain Number of sub carrier wave, M are greater than or equal to 1 integer；

Alternatively,

The DMRS is carried at least one resource unit, if the sum for the DMRS port that system is supported is 6, and this 6 DMRS port is divided into 3 DMRS port groups, and each DMRS port group includes 2 DMRS ports, and 3 DMRS port groups include First DMRS port group, the second DMRS port group and third DMRS port group, wherein the DMRS port in each DMRS port group It is multiplexed identical running time-frequency resource by CDM mode, in each resource unit, the running time-frequency resource packet of the first DMRS port group mapping Include 12n, 12n+1,12n+6,12n+7 subcarriers in time domain on continuous first symbol and the second symbol；2nd DMRS The running time-frequency resource of port set mapping includes 12n+2,12n+3,12n+8,12n on the first symbol and the second symbol in time domain + 9 subcarriers；The running time-frequency resource of third DMRS port group mapping includes the on the first symbol and the second symbol in time domain 12n+4,12n+5,12n+10,12n+11 subcarriers, wherein n is more than or equal to 0, and is less thanAny one or more Integer, wherein M is number of sub carrier wave of each resource unit on frequency domain, and M is greater than or equal to 1 integer；

The DMRS is sent by the running time-frequency resource.

2. a kind of indicating means characterized by comprising

Instruction information is generated, the instruction information is used to indicate the running time-frequency resource for carrying demodulated reference signal DMRS, wherein

Alternatively,

Send the instruction information.

3. a kind of device for sending demodulated reference signal DMRS characterized by comprising

Determination unit, for determining the running time-frequency resource for carrying DMRS, wherein

Alternatively,

Transmission unit, for sending the DMRS by the running time-frequency resource.

4. a kind of instruction device characterized by comprising

Generation unit, for generating instruction information, the instruction information is used to indicate for carrying demodulated reference signal DMRS's Running time-frequency resource, wherein

Alternatively,

Transmission unit, for sending the instruction information.

5. a kind of device for sending demodulated reference signal DMRS characterized by comprising

Processor, for determining the running time-frequency resource for carrying DMRS, wherein

Alternatively,

Transceiver, for sending the DMRS by the running time-frequency resource.

6. a kind of instruction device characterized by comprising

Processor, for generate instruction information, it is described instruction information be used to indicate for carry demodulated reference signal DMRS when Frequency resource, wherein

Alternatively,

Transceiver, for sending the instruction information.

7. a kind of device for sending demodulated reference signal DMRS characterized by comprising

Memory；

Processor, for method described in perform claim requirement 1 or 2.

8. a kind of computer storage medium, which is characterized in that computer instruction is stored in the computer storage medium, when the meter When the instruction of calculation machine is run on computers, so that method described in computer perform claim requirement 1 or 2.